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[{"id":506,"title":"Yes \u2014 critical security patches should install automatically.","votes":0,"type":"x","order":1,"pct":0,"resources":[]},{"id":507,"title":"No \u2014 every update should be tested before deployment.","votes":0,"type":"x","order":2,"pct":0,"resources":[]},{"id":508,"title":"Only critical vulnerabilities should auto-install.","votes":0,"type":"x","order":3,"pct":0,"resources":[]},{"id":509,"title":"I patch when Reddit starts panicking.","votes":0,"type":"x","order":4,"pct":0,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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172

Ubuntu 18.04/14.04 LTS: USN-7233-2 kernel flaws addressed

Several security issues were fixed in the Linux kernel.. ========================================================================== Ubuntu Security Notice USN-7233-2 January 30, 2025 linux-azure, linux-azure-4.15 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-azure-4.15: Linux kernel for Microsoft Azure Cloud systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems Details: Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Multiple devices driver; - Network drivers; - Mellanox network drivers; - S/390 drivers; - SCSI subsystem; - Sonic Silicon Backplane drivers; - File systems infrastructure; - Closures library; - Netfilter; - TIPC protocol; - VMware vSockets driver; (CVE-2024-26929, CVE-2024-40982, CVE-2024-42311, CVE-2024-53141, CVE-2024-41066, CVE-2024-38661, CVE-2024-38553, CVE-2024-43914, CVE-2024-26663, CVE-2024-42252, CVE-2024-38597, CVE-2024-53103, CVE-2024-41020, CVE-2024-41012, CVE-2024-26595) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS linux-image-4.15.0-1185-azure 4.15.0-1185.200 Available with Ubuntu Pro linux-image-azure-lts-18.04 4.15.0.1185.153 Available with Ubuntu Pro Ubuntu 14.04 LTS linux-image-4.15.0-1185-azure 4.15.0-1185.200~14.04.1 Available with Ubuntu Pro linux-image-azure 4.15.0.1185.200~14.04.1 Available with Ubuntu Pro After a standard systemupdate you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-7233-2 https://ubuntu.com/security/notices/USN-7233-1 CVE-2024-26595, CVE-2024-26663, CVE-2024-26929, CVE-2024-38553, CVE-2024-38597, CVE-2024-38661, CVE-2024-40982, CVE-2024-41012, CVE-2024-41020, CVE-2024-41066, CVE-2024-42252, CVE-2024-42311, CVE-2024-43914, CVE-2024-53103, CVE-2024-53141 . Essential enhancements for Ubuntu tackling various kernel vulnerabilities and bolstering system integrity.. Ubuntu Security Advisory, Linux Kernel Update, Azure Cloud Security. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Jan 30, 2025 Critical Ubuntu
172

Ubuntu 22.04 LTS USN-6461-1: Critical Kernel Flaws Fixed

Several security issues were fixed in the Linux kernel.. ========================================================================== Ubuntu Security Notice USN-6461-1 October 31, 2023 linux-oem-6.1 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-oem-6.1: Linux kernel for OEM systems Details: Yu Hao discovered that the UBI driver in the Linux kernel did not properly check for MTD with zero erasesize during device attachment. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2023-31085) Marek Marczykowski-Górecki discovered that the Xen event channel infrastructure implementation in the Linux kernel contained a race condition. An attacker in a guest VM could possibly use this to cause a denial of service (paravirtualized device unavailability). (CVE-2023-34324) Lucas Leong discovered that the netfilter subsystem in the Linux kernel did not properly validate some attributes passed from userspace. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-39189) Bien Pham discovered that the netfiler subsystem in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local user could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4244) Kyle Zeng discovered that the IPv4 implementation in the Linux kernel did not properly handle socket buffers (skb) when performing IP routing in certain circumstances, leading to a null pointer dereference vulnerability. A privileged attacker could use this to cause a denial of service (system crash). (CVE-2023-42754) It was discovered that the Quick Fair Queueing scheduler implementationin the Linux kernel did not properly handle network packets in certain conditions, leading to a use after free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4921) It was discovered that the SMB network file sharing protocol implementation in the Linux kernel did not properly handle certain error conditions, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-5345) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: linux-image-6.1.0-1025-oem 6.1.0-1025.25 linux-image-oem-22.04 6.1.0.1025.26 linux-image-oem-22.04a 6.1.0.1025.26 linux-image-oem-22.04b 6.1.0.1025.26 linux-image-oem-22.04c 6.1.0.1025.26 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-6461-1 CVE-2023-31085, CVE-2023-34324, CVE-2023-39189, CVE-2023-4244, CVE-2023-42754, CVE-2023-4921, CVE-2023-5345 Package Information: https://launchpad.net/ubuntu/+source/linux-oem-6.1/6.1.0-1025.25 . Upgrades for Ubuntu 22.04 LTS address several kernel vulnerabilities, improving system reliability and safeguarding against potential threats.. Ubuntu Security, Kernel Issues, OEM Security Notice. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Oct 31, 2023 Critical Ubuntu
172

Ubuntu 20.04 LTS: 5917-1 Critical Denial Of Service Threats

Several security issues were fixed in the Linux kernel.. =========================================================================Ubuntu Security Notice USN-5917-1 March 03, 2023 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4 vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-gke: Linux kernel for Google Container Engine (GKE) systems - linux-gkeop: Linux kernel for Google Container Engine (GKE) systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems - linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems - linux-hwe-5.4: Linux hardware enablement (HWE) kernel - linux-oracle-5.4: Linux kernel for Oracle Cloud systems Details: It was discovered that the Upper Level Protocol (ULP) subsystem in the Linux kernel did not properly handle sockets entering the LISTEN state in certain protocols, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-0461) Kyle Zeng discovered that the sysctl implementation in the Linux kernel contained a stack-based buffer overflow. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-4378) It was discovered that the NVMe driver in the Linux kernel did not properly handle resetevents in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-3169) It was discovered that a use-after-free vulnerability existed in the SGI GRU driver in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3424) Gwangun Jung discovered a race condition in the IPv4 implementation in the Linux kernel when deleting multipath routes, resulting in an out-of-bounds read. An attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2022-3435) It was discovered that a race condition existed in the Kernel Connection Multiplexor (KCM) socket implementation in the Linux kernel when releasing sockets in certain situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-3521) It was discovered that the Netronome Ethernet driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3545) It was discovered that the hugetlb implementation in the Linux kernel contained a race condition in some situations. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information (kernel memory). (CVE-2022-3623) Ziming Zhang discovered that the VMware Virtual GPU DRM driver in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-36280) Hyunwoo Kim discovered that the DVB Core driver in the Linux kernel did not properly perform reference counting in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-41218) It was discovered that the Inteli915 graphics driver in the Linux kernel did not perform a GPU TLB flush in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-4139) It was discovered that a race condition existed in the Xen network backend driver in the Linux kernel when handling dropped packets in certain circumstances. An attacker could use this to cause a denial of service (kernel deadlock). (CVE-2022-42328, CVE-2022-42329) It was discovered that the Atmel WILC1000 driver in the Linux kernel did not properly validate offsets, leading to an out-of-bounds read vulnerability. An attacker could use this to cause a denial of service (system crash). (CVE-2022-47520) It was discovered that the network queuing discipline implementation in the Linux kernel contained a null pointer dereference in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-47929) José Oliveira and Rodrigo Branco discovered that the prctl syscall implementation in the Linux kernel did not properly protect against indirect branch prediction attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2023-0045) It was discovered that a use-after-free vulnerability existed in the Advanced Linux Sound Architecture (ALSA) subsystem. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-0266) Kyle Zeng discovered that the IPv6 implementation in the Linux kernel contained a NULL pointer dereference vulnerability in certain situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-0394) It was discovered that the Android Binder IPC subsystem in the Linux kernel did not properly validate inputs in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-20938) Kyle Zengdiscovered that the class-based queuing discipline implementation in the Linux kernel contained a type confusion vulnerability in some situations. An attacker could use this to cause a denial of service (system crash). (CVE-2023-23454) Kyle Zeng discovered that the ATM VC queuing discipline implementation in the Linux kernel contained a type confusion vulnerability in some situations. An attacker could use this to cause a denial of service (system crash). (CVE-2023-23455) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1065-gkeop 5.4.0-1065.69 linux-image-5.4.0-1087-kvm 5.4.0-1087.93 linux-image-5.4.0-1094-oracle 5.4.0-1094.103 linux-image-5.4.0-1095-gke 5.4.0-1095.102 linux-image-5.4.0-1097-aws 5.4.0-1097.105 linux-image-5.4.0-1101-gcp 5.4.0-1101.110 linux-image-5.4.0-1104-azure 5.4.0-1104.110 linux-image-5.4.0-144-generic 5.4.0-144.161 linux-image-5.4.0-144-generic-lpae 5.4.0-144.161 linux-image-5.4.0-144-lowlatency 5.4.0-144.161 linux-image-aws-lts-20.04 5.4.0.1097.94 linux-image-azure-lts-20.04 5.4.0.1104.97 linux-image-gcp-lts-20.04 5.4.0.1101.103 linux-image-generic 5.4.0.144.142 linux-image-generic-lpae 5.4.0.144.142 linux-image-gke 5.4.0.1095.100 linux-image-gke-5.4 5.4.0.1095.100 linux-image-gkeop 5.4.0.1065.63 linux-image-gkeop-5.4 5.4.0.1065.63 linux-image-kvm 5.4.0.1087.81 linux-image-lowlatency 5.4.0.144.142 linux-image-oem 5.4.0.144.142 linux-image-oem-osp1 5.4.0.144.142 linux-image-oracle-lts-20.04 5.4.0.1094.87 linux-image-virtual 5.4.0.144.142 Ubuntu 18.04 LTS: linux-image-5.4.0-1094-oracle 5.4.0-1094.103~18.04.1 linux-image-5.4.0-1097-aws 5.4.0-1097.105~18.04.1 linux-image-5.4.0-1104-azure 5.4.0-1104.110~18.04.1 linux-image-5.4.0-144-generic 5.4.0-144.161~18.04.1 linux-image-5.4.0-144-generic-lpae 5.4.0-144.161~18.04.1 linux-image-5.4.0-144-lowlatency 5.4.0-144.161~18.04.1 linux-image-aws 5.4.0.1097.75 linux-image-azure 5.4.0.1104.77 linux-image-generic-hwe-18.04 5.4.0.144.161~18.04.115 linux-image-generic-lpae-hwe-18.04 5.4.0.144.161~18.04.115 linux-image-lowlatency-hwe-18.04 5.4.0.144.161~18.04.115 linux-image-oem 5.4.0.144.161~18.04.115 linux-image-oem-osp1 5.4.0.144.161~18.04.115 linux-image-oracle 5.4.0.1094.103~18.04.68 linux-image-snapdragon-hwe-18.04 5.4.0.144.161~18.04.115 linux-image-virtual-hwe-18.04 5.4.0.144.161~18.04.115 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-5917-1 CVE-2022-3169, CVE-2022-3424, CVE-2022-3435, CVE-2022-3521, CVE-2022-3545, CVE-2022-3623, CVE-2022-36280, CVE-2022-41218, CVE-2022-4139, CVE-2022-42328, CVE-2022-42329, CVE-2022-4378, CVE-2022-47520, CVE-2022-47929, CVE-2023-0045, CVE-2023-0266, CVE-2023-0394, CVE-2023-0461, CVE-2023-20938, CVE-2023-23454, CVE-2023-23455 Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-144.161 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1097.105 https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1104.110 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1101.110 https://launchpad.net/ubuntu/+source/linux-gke/5.4.0-1095.102 https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1065.69 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1087.93 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1094.103 https://launchpad.net/ubuntu/+source/linux-aws-5.4/5.4.0-1097.105~18.04.1 https://launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1104.110~18.04.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-144.161~18.04.1 https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1094.103~18.04.1 . Numerous kernel vulnerabilities have been addressed on Ubuntu affecting platforms such as AWS, Azure, and others, necessitating updates and system reboots.. Kernel Flaw Update, Ubuntu Security Advisory, Linux Kernel Issues. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Mar 03, 2023 Critical Ubuntu
172

Ubuntu 16.04 ESM USN-5684-1 Critical: Azure Kernel Flaws

Several security issues were fixed in the Linux kernel.. =========================================================================Ubuntu Security Notice USN-5684-1 October 17, 2022 linux-azure vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-azure: Linux kernel for Microsoft Azure Cloud systems Details: It was discovered that the SUNRPC RDMA protocol implementation in the Linux kernel did not properly calculate the header size of a RPC message payload. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2022-0812) Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP implementation in the Linux kernel did not provide sufficient randomization when calculating port offsets. An attacker could possibly use this to expose sensitive information. (CVE-2022-1012, CVE-2022-32296) Duoming Zhou discovered that race conditions existed in the timer handling implementation of the Linux kernel's Rose X.25 protocol layer, resulting in use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-2318) Roger Pau Monné discovered that the Xen virtual block driver in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memory). (CVE-2022-26365) Roger Pau Monné discovered that the Xen paravirtualization frontend in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memory). (CVE-2022-33740) It was discovered that the Xen paravirtualization frontend in theLinux kernel incorrectly shared unrelated data when communicating with certain backends. A local attacker could use this to cause a denial of service (guest crash) or expose sensitive information (guest kernel memory). (CVE-2022-33741, CVE-2022-33742) Oleksandr Tyshchenko discovered that the Xen paravirtualization platform in the Linux kernel on ARM platforms contained a race condition in certain situations. An attacker in a guest VM could use this to cause a denial of service in the host OS. (CVE-2022-33744) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM: linux-image-4.15.0-1153-azure 4.15.0-1153.168~16.04.1 linux-image-azure 4.15.0.1153.140 Ubuntu 14.04 ESM: linux-image-4.15.0-1153-azure 4.15.0-1153.168~14.04.1 linux-image-azure 4.15.0.1153.122 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-5684-1 CVE-2022-0812, CVE-2022-1012, CVE-2022-2318, CVE-2022-26365, CVE-2022-32296, CVE-2022-33740, CVE-2022-33741, CVE-2022-33742, CVE-2022-33744 . Important security update USN-5684-1 for Ubuntu related to kernel vulnerabilities. Immediate updates required to ensure system protection.. Linux Kernel Security, Ubuntu Advisory, Azure Threats. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Oct 17, 2022 Critical Ubuntu
172

Ubuntu 20.04 LTS USN-4679-1 Critical: Linux Kernel Flaws Detected

Several security issues were fixed in the Linux kernel.. =========================================================================Ubuntu Security Notice USN-4679-1 January 06, 2021 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi: Linux kernel for Raspberry Pi (V8) systems - linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems - linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems - linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems - linux-gke-5.4: Linux kernel for Google Container Engine (GKE) systems - linux-hwe-5.4: Linux hardware enablement (HWE) kernel - linux-oracle-5.4: Linux kernel for Oracle Cloud systems - linux-raspi-5.4: Linux kernel for Raspberry Pi (V8) systems Details: It was discovered that the console keyboard driver in the Linux kernel contained a race condition. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-25656) Minh Yuan discovered that the tty driver in the Linux kernel contained race conditions when handling fonts. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-25668) Kiyin (尹亮) discovered that the perf subsystem in the Linux kernel did not properlydeallocate memory in some situations. A privileged attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2020-25704) Jinoh Kang discovered that the Xen event channel infrastructure in the Linux kernel contained a race condition. An attacker in guest could possibly use this to cause a denial of service (dom0 crash). (CVE-2020-27675) Daniel Axtens discovered that PowerPC RTAS implementation in the Linux kernel did not properly restrict memory accesses in some situations. A privileged local attacker could use this to arbitrarily modify kernel memory, potentially bypassing kernel lockdown restrictions. (CVE-2020-27777) Minh Yuan discovered that the framebuffer console driver in the Linux kernel did not properly handle fonts in some conditions. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-28974) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1026-raspi 5.4.0-1026.29 linux-image-5.4.0-1031-kvm 5.4.0-1031.32 linux-image-5.4.0-1033-gcp 5.4.0-1033.35 linux-image-5.4.0-1034-aws 5.4.0-1034.35 linux-image-5.4.0-1034-oracle 5.4.0-1034.36 linux-image-5.4.0-1035-azure 5.4.0-1035.36 linux-image-5.4.0-59-generic 5.4.0-59.65 linux-image-5.4.0-59-generic-lpae 5.4.0-59.65 linux-image-5.4.0-59-lowlatency 5.4.0-59.65 linux-image-aws 5.4.0.1034.35 linux-image-azure 5.4.0.1035.33 linux-image-gcp 5.4.0.1033.42 linux-image-generic 5.4.0.59.62 linux-image-generic-lpae 5.4.0.59.62 linux-image-kvm 5.4.0.1031.29 linux-image-lowlatency 5.4.0.59.62 linux-image-oem 5.4.0.59.62 linux-image-oem-osp1 5.4.0.59.62 linux-image-oracle 5.4.0.1034.31 linux-image-raspi 5.4.0.1026.61 linux-image-raspi2 5.4.0.1026.61 linux-image-virtual 5.4.0.59.62 Ubuntu 18.04 LTS: linux-image-5.4.0-1026-raspi 5.4.0-1026.29~18.04.1 linux-image-5.4.0-1033-gcp 5.4.0-1033.35~18.04.1 linux-image-5.4.0-1033-gke 5.4.0-1033.35~18.04.1 linux-image-5.4.0-1034-aws 5.4.0-1034.35~18.04.1 linux-image-5.4.0-1034-oracle 5.4.0-1034.36~18.04.1 linux-image-5.4.0-1035-azure 5.4.0-1035.36~18.04.1 linux-image-5.4.0-59-generic 5.4.0-59.65~18.04.1 linux-image-5.4.0-59-generic-lpae 5.4.0-59.65~18.04.1 linux-image-5.4.0-59-lowlatency 5.4.0-59.65~18.04.1 linux-image-aws 5.4.0.1034.19 linux-image-azure 5.4.0.1035.17 linux-image-gcp 5.4.0.1033.21 linux-image-generic-hwe-18.04 5.4.0.59.65~18.04.54 linux-image-generic-lpae-hwe-18.04 5.4.0.59.65~18.04.54 linux-image-gke-5.4 5.4.0.1033.35~18.04.2 linux-image-lowlatency-hwe-18.04 5.4.0.59.65~18.04.54 linux-image-oem 5.4.0.59.65~18.04.54 linux-image-oem-osp1 5.4.0.59.65~18.04.54 linux-image-oracle 5.4.0.1034.36~18.04.18 linux-image-raspi-hwe-18.04 5.4.0.1026.30 linux-image-snapdragon-hwe-18.04 5.4.0.59.65~18.04.54 linux-image-virtual-hwe-18.04 5.4.0.59.65~18.04.54 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-4679-1 CVE-2020-25656, CVE-2020-25668, CVE-2020-25704, CVE-2020-27675, CVE-2020-27777,CVE-2020-28974 Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-59.65 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1034.35 https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1035.36 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1033.35 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1031.32 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1034.36 https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1026.29 https://launchpad.net/ubuntu/+source/linux-aws-5.4/5.4.0-1034.35~18.04.1 https://launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1035.36~18.04.1 https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1033.35~18.04.1 https://launchpad.net/ubuntu/+source/linux-gke-5.4/5.4.0-1033.35~18.04.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-59.65~18.04.1 https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1034.36~18.04.1 https://launchpad.net/ubuntu/+source/linux-raspi-5.4/5.4.0-1026.29~18.04.1 . Critical Linux kernel flaws for Ubuntu 20.04 and 18.04 require immediate updates to ensure system safety.. Ubuntu Kernel Security,Linux Kernel Issues,Kernel Update,Security Fix,Security Patch. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Jan 05, 2021 Critical Ubuntu
87

Debian Stretch: DSA-4313-1 Critical: Multiple Kernel Flaws

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. . - ------------------------------------------------------------------------- Debian Security Advisory DSA-4313-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Salvatore Bonaccorso October 08, 2018 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : linux CVE ID : CVE-2018-15471 CVE-2018-18021 Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. CVE-2018-15471 (XSA-270) Felix Wilhelm of Google Project Zero discovered a flaw in the hash handling of the xen-netback Linux kernel module. A malicious or buggy frontend may cause the (usually privileged) backend to make out of bounds memory accesses, potentially resulting in privilege escalation, denial of service, or information leaks. https://xenbits.xen.org/xsa/advisory-270.html CVE-2018-18021 It was discovered that the KVM subsystem on the arm64 platform does not properly handle the KVM_SET_ON_REG ioctl. An attacker who can create KVM based virtual machines can take advantage of this flaw for denial of service (hypervisor panic) or privilege escalation (arbitrarily redirect the hypervisor flow of control with full register control). For the stable distribution (stretch), these problems have been fixed in version 4.9.110-3+deb9u6. We recommend that you upgrade your linux packages. For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/source-package/linux Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list:This email address is being protected from spambots. You need JavaScript enabled to view it. . Uncover urgent security flaws within the Debian Linux kernel that demand prompt remediation efforts.. Debian Security, Linux Kernel Update, Privilege Escalation, Denial of Service. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Oct 08, 2018 Critical Debian
172

Ubuntu 14.04 LTS: USN-3250-1 High Severity: Kernel Crash or Code Execution

The system could be made to crash or run programs as an administrator.. =========================================================================Ubuntu Security Notice USN-3250-1 March 29, 2017 linux vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 LTS Summary: The system could be made to crash or run programs as an administrator. Software Description: - linux: Linux kernel Details: It was discovered that the xfrm framework for transforming packets in the Linux kernel did not properly validate data received from user space. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code with administrative privileges. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-3.13.0-115-generic 3.13.0-115.162 linux-image-3.13.0-115-generic-lpae 3.13.0-115.162 linux-image-3.13.0-115-lowlatency 3.13.0-115.162 linux-image-3.13.0-115-powerpc-e500 3.13.0-115.162 linux-image-3.13.0-115-powerpc-e500mc 3.13.0-115.162 linux-image-3.13.0-115-powerpc-smp 3.13.0-115.162 linux-image-3.13.0-115-powerpc64-smp 3.13.0-115.162 linux-image-generic 3.13.0.115.125 linux-image-generic-lpae 3.13.0.115.125 linux-image-lowlatency 3.13.0.115.125 linux-image-powerpc-e500 3.13.0.115.125 linux-image-powerpc-e500mc 3.13.0.115.125 linux-image-powerpc-smp 3.13.0.115.125 linux-image-powerpc64-smp 3.13.0.115.125 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic,linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-3250-1 CVE-2017-7184 Package Information: https://launchpad.net/ubuntu/+source/linux/3.13.0-115.162 . A recent flaw in the Linux kernel for Ubuntu enables unauthorized access and potential system instability. Users should apply the critical update immediately.. Ubuntu Kernel Update, System Security, Kernel Flaw. . LinuxSecurity.com Team

Calendar%202 Mar 30, 2017 Ubuntu
87

Debian: DSA-3607-1 Critical: Linux Kernel DoS and Escalation Issues

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. . - ------------------------------------------------------------------------- Debian Security Advisory DSA-3607-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Salvatore Bonaccorso June 28, 2016 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : linux CVE ID : CVE-2015-7515 CVE-2016-0821 CVE-2016-1237 CVE-2016-1583 CVE-2016-2117 CVE-2016-2143 CVE-2016-2184 CVE-2016-2185 CVE-2016-2186 CVE-2016-2187 CVE-2016-3070 CVE-2016-3134 CVE-2016-3136 CVE-2016-3137 CVE-2016-3138 CVE-2016-3140 CVE-2016-3156 CVE-2016-3157 CVE-2016-3672 CVE-2016-3951 CVE-2016-3955 CVE-2016-3961 CVE-2016-4470 CVE-2016-4482 CVE-2016-4485 CVE-2016-4486 CVE-2016-4565 CVE-2016-4569 CVE-2016-4578 CVE-2016-4580 CVE-2016-4581 CVE-2016-4805 CVE-2016-4913 CVE-2016-4997 CVE-2016-4998 CVE-2016-5243 CVE-2016-5244 Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. CVE-2015-7515, CVE-2016-2184, CVE-2016-2185, CVE-2016-2186, CVE-2016-2187, CVE-2016-3136, CVE-2016-3137, CVE-2016-3138, CVE-2016-3140 Ralf Spenneberg of OpenSource Security reported that various USB drivers do not sufficiently validate USB descriptors. This allowed a physically present user with a specially designed USB device to cause a denial of service (crash). CVE-2016-0821 Solar Designer noted that the list 'poisoning' feature, intended to mitigate the effects of bugs in list manipulation in the kernel, used poison values within the range of virtual addresses that can be allocated by userprocesses. CVE-2016-1237 David Sinquin discovered that nfsd does not check permissions when setting ACLs, allowing users to grant themselves permissions to a file by setting the ACL. CVE-2016-1583 Jann Horn of Google Project Zero reported that the eCryptfs filesystem could be used together with the proc filesystem to cause a kernel stack overflow. If the ecryptfs-utils package is installed, local users could exploit this, via the mount.ecryptfs_private program, for denial of service (crash) or possibly for privilege escalation. CVE-2016-2117 Justin Yackoski of Cryptonite discovered that the Atheros L2 ethernet driver incorrectly enables scatter/gather I/O. A remote attacker could take advantage of this flaw to obtain potentially sensitive information from kernel memory. CVE-2016-2143 Marcin Koscielnicki discovered that the fork implementation in the Linux kernel on s390 platforms mishandles the case of four page-table levels, which allows local users to cause a denial of service (system crash). CVE-2016-3070 Jan Stancek of Red Hat discovered a local denial of service vulnerability in AIO handling. CVE-2016-3134 The Google Project Zero team found that the netfilter subsystem does not sufficiently validate filter table entries. A user with the CAP_NET_ADMIN capability could use this for denial of service (crash) or possibly for privilege escalation. Debian disables unprivileged user namespaces by default, if locally enabled with the kernel.unprivileged_userns_clone sysctl, this allows privilege escalation. CVE-2016-3156 Solar Designer discovered that the IPv4 implementation in the Linux kernel did not perform the destruction of inet device objects properly. An attacker in a guest OS could use this to cause a denial of service (networking outage) in the host OS. CVE-2016-3157 / XSA-171 Andy Lutomirski discovered that the x86_64 (amd64) task switching implementation did notcorrectly update the I/O permission level when running as a Xen paravirtual (PV) guest. In some configurations this would allow local users to cause a denial of service (crash) or to escalate their privileges within the guest. CVE-2016-3672 Hector Marco and Ismael Ripoll noted that it was possible to disable Address Space Layout Randomisation (ASLR) for x86_32 (i386) programs by removing the stack resource limit. This made it easier for local users to exploit security flaws in programs that have the setuid or setgid flag set. CVE-2016-3951 It was discovered that the cdc_ncm driver would free memory prematurely if certain errors occurred during its initialisation. This allowed a physically present user with a specially designed USB device to cause a denial of service (crash) or possibly to escalate their privileges. CVE-2016-3955 Ignat Korchagin reported that the usbip subsystem did not check the length of data received for a USB buffer. This allowed denial of service (crash) or privilege escalation on a system configured as a usbip client, by the usbip server or by an attacker able to impersonate it over the network. A system configured as a usbip server might be similarly vulnerable to physically present users. CVE-2016-3961 / XSA-174 Vitaly Kuznetsov of Red Hat discovered that Linux allowed the use of hugetlbfs on x86 (i386 and amd64) systems even when running as a Xen paravirtualised (PV) guest, although Xen does not support huge pages. This allowed users with access to /dev/hugepages to cause a denial of service (crash) in the guest. CVE-2016-4470 David Howells of Red Hat discovered that a local user can trigger a flaw in the Linux kernel's handling of key lookups in the keychain subsystem, leading to a denial of service (crash) or possibly to privilege escalation. CVE-2016-4482, CVE-2016-4485, CVE-2016-4486, CVE-2016-4569, CVE-2016-4578, CVE-2016-4580, CVE-2016-5243, CVE-2016-5244 Kangjie Lu reported that the USB devio, llc, rtnetlink, ALSA timer, x25, tipc, and rds facilities leaked information from the kernel stack. CVE-2016-4565 Jann Horn of Google Project Zero reported that various components in the InfiniBand stack implemented unusual semantics for the write() operation. On a system with InfiniBand drivers loaded, local users could use this for denial of service or privilege escalation. CVE-2016-4581 Tycho Andersen discovered that in some situations the Linux kernel did not handle propagated mounts correctly. A local user can take advantage of this flaw to cause a denial of service (system crash). CVE-2016-4805 Baozeng Ding discovered a use-after-free in the generic PPP layer in the Linux kernel. A local user can take advantage of this flaw to cause a denial of service (system crash), or potentially escalate their privileges. CVE-2016-4913 Al Viro found that the ISO9660 filesystem implementation did not correctly count the length of certain invalid name entries. Reading a directory containing such name entries would leak information from kernel memory. Users permitted to mount disks or disk images could use this to obtain sensitive information. CVE-2016-4997 / CVE-2016-4998 Jesse Hertz and Tim Newsham discovered that missing input sanitising in Netfilter socket handling may result in denial of service. Debian disables unprivileged user namespaces by default, if locally enabled with the kernel.unprivileged_userns_clone sysctl, this also allows privilege escalation. For the stable distribution (jessie), these problems have been fixed in version 3.16.7-ckt25-2+deb8u2. We recommend that you upgrade your linux packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it. . -------------------------------------------------------------------------- Debian Security Advisory. vulnerabilities, linux, kernel, privilege, escala. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Jun 28, 2016 Critical Debian
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