Stay Secure with the Latest Linux Advisories
Refine advisories
X Clear Filters
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Community Poll
What got you started with Linux?
Loading...
Explore Latest Linux Security advisories
We found -5 articles for you...
172
security advisoryDoSubuntuUbuntu 20.04 LTS & 18.04 LTS: USN-5210-2 Moderate Boot Kernel Issue
USN-5210-1 introduced a regression in the Linux kernel.. =========================================================================Ubuntu Security Notice USN-5210-2 January 12, 2022 linux, linux-gcp, linux-gcp-5.4, linux-hwe-5.4 regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: USN-5210-1 introduced a regression in the Linux kernel. Software Description: - linux: Linux kernel - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe-5.4: Linux hardware enablement (HWE) kernel Details: USN-5210-1 fixed vulnerabilities in the Linux kernel. Unfortunately, that update introduced a regression that caused failures to boot in environments with AMD Secure Encrypted Virtualization (SEV) enabled. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. (CVE-2021-4002) It was discovered that the Linux kernel did not properly enforce certain types of entries in the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. An attacker could use this to bypass UEFI Secure Boot restrictions. (CVE-2020-26541) It was discovered that a race condition existed in the overlay file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-20321) It was discovered that the NFC subsystem in the Linux kernel contained a use-after-free vulnerability in its NFC Controller Interface (NCI) implementation. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-3760) It was discovered that an integer overflow could be triggered in the eBPF implementation in the Linux kernel when preallocating objects for stack maps. A privileged local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-41864) It was discovered that the KVM implementation for POWER8 processors in the Linux kernel did not properly keep track if a wakeup event could be resolved by a guest. An attacker in a guest VM could possibly use this to cause a denial of service (host OS crash). (CVE-2021-43056) It was discovered that the ISDN CAPI implementation in the Linux kernel contained a race condition in certain situations that could trigger an array out-of-bounds bug. A privileged local attacker could possibly use this to cause a denial of service or execute arbitrary code. (CVE-2021-43389) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1060-gcp 5.4.0-1060.64 linux-image-5.4.0-94-generic 5.4.0-94.106 linux-image-5.4.0-94-generic-lpae 5.4.0-94.106 linux-image-5.4.0-94-lowlatency 5.4.0-94.106 linux-image-gcp-lts-20.04 5.4.0.1060.70 linux-image-generic 5.4.0.94.98 linux-image-generic-lpae 5.4.0.94.98 linux-image-lowlatency 5.4.0.94.98 linux-image-oem 5.4.0.94.98 linux-image-oem-osp1 5.4.0.94.98 linux-image-virtual 5.4.0.94.98 Ubuntu 18.04 LTS: linux-image-5.4.0-1060-gcp 5.4.0-1060.64~18.04.1 linux-image-5.4.0-94-generic 5.4.0-94.106~18.04.1 linux-image-5.4.0-94-generic-lpae 5.4.0-94.106~18.04.1 linux-image-5.4.0-94-lowlatency 5.4.0-94.106~18.04.1 linux-image-gcp 5.4.0.1060.46 linux-image-generic-hwe-18.04 5.4.0.94.106~18.04.83 linux-image-generic-lpae-hwe-18.04 5.4.0.94.106~18.04.83 linux-image-lowlatency-hwe-18.04 5.4.0.94.106~18.04.83 linux-image-oem 5.4.0.94.106~18.04.83 linux-image-oem-osp1 5.4.0.94.106~18.04.83 linux-image-snapdragon-hwe-18.04 5.4.0.94.106~18.04.83 linux-image-virtual-hwe-18.04 5.4.0.94.106~18.04.83 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-5210-2 https://ubuntu.com/security/notices/USN-5210-1 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1956575 Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-94.106 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1060.64 https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1060.64~18.04.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-94.106~18.04.1 . The Ubuntu security team announced advisory USN-5210-2, addressing a kernel regression affecting SEV boot functionality to enhance stability and security.. Linux Kernel Update, Ubuntu Security Notice, AMD SEV Issue, Boot Failure Fix. . LinuxSecurity.com Team
Jan 12, 2022
Ubuntu
87
security advisorydebianpackage upgradeDebian Stretch: DSA-4279-2 High Severity Boot Failure Fix
The security update announced as DSA 4279-1 caused regressions on the ARM architectures (boot failures on some systems). Updated packages are now available to correct this issue. . - ------------------------------------------------------------------------- Debian Security Advisory DSA-4279-2
Aug 22, 2018
Debian
172
security advisorydenial of serviceinformation leakUbuntu 16.04 LTS USN-3718-2 Critical: Boot Failures Fixed
A regression that caused boot failures was fixed in the Linux kernel.. =========================================================================Ubuntu Security Notice USN-3718-2 July 21, 2018 linux-hwe, linux-azure, linux-gcp regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 LTS Summary: A regression that caused boot failures was fixed in the Linux kernel. Software Description: - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe: Linux hardware enablement (HWE) kernel Details: USN-3695-2 fixed vulnerabilities in the Linux Hardware Enablement Kernel (HWE) kernel for Ubuntu 16.04 LTS. Unfortunately, the fix for CVE-2018-1108 introduced a regression where insufficient early entropy prevented services from starting, leading in some situations to a failure to boot, This update addresses the issue. We apologize for the inconvenience. Original advisory details: Jann Horn discovered that the Linux kernel's implementation of random seed data reported that it was in a ready state before it had gathered sufficient entropy. An attacker could use this to expose sensitive information. (CVE-2018-1108) Wen Xu discovered that the ext4 file system implementation in the Linux kernel did not properly initialize the crc32c checksum driver. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-1094) It was discovered that the cdrom driver in the Linux kernel contained an incorrect bounds check. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-10940) Wen Xu discovered that the ext4 file system implementation in the Linux kernel did not properly validate xattr sizes. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-1095) Jann Horn discovered that the 32 bit adjtimex() syscallimplementation for 64 bit Linux kernels did not properly initialize memory returned to user space in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-11508) It was discovered that an information leak vulnerability existed in the floppy driver in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-7755) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.15.0-1014-gcp 4.15.0-1014.14~16.04.1 linux-image-4.15.0-1018-azure 4.15.0-1018.18~16.04.1 linux-image-4.15.0-29-generic 4.15.0-29.31~16.04.1 linux-image-4.15.0-29-generic-lpae 4.15.0-29.31~16.04.1 linux-image-4.15.0-29-lowlatency 4.15.0-29.31~16.04.1 linux-image-azure 4.15.0.1018.24 linux-image-gcp 4.15.0.1014.26 linux-image-generic-hwe-16.04 4.13.0.45.64 linux-image-generic-lpae-hwe-16.04 4.13.0.45.64 linux-image-gke 4.15.0.1014.26 linux-image-lowlatency-hwe-16.04 4.13.0.45.64 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-3718-2 https://ubuntu.com/security/notices/USN-3718-1 https://bugs.launchpad.net/ubuntu/+bug/1779827, https://ubuntu.com/security/notices/USN-3695-2 Package Information: https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1018.18~16.04.1 https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1014.14~16.04.1 https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-29.31~16.04.1 . An essential patch has been deployed for Ubuntu 16.04 LTS tackling kernel initiation issues and potential security vulnerabilities.. Ubuntu Kernel Update, Boot Failure Fix, Linux Kernel Fix. . Severity: Critical. LinuxSecurity.com Team
Jul 21, 2018
•Critical
Ubuntu
172
security advisoryupdate instructionsubuntuUbuntu 18.04 LTS USN-3718-1: Fix for Moderate Boot Failures Now Available
A regression that caused boot failures was fixed in the Linux kernel.. =========================================================================Ubuntu Security Notice USN-3718-1 July 21, 2018 linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS Summary: A regression that caused boot failures was 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-oem: Linux kernel for OEM processors Details: USN-3695-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. Unfortunately, the fix for CVE-2018-1108 introduced a regression where insufficient early entropy prevented services from starting, leading in some situations to a failure to boot, This update addresses the issue. We apologize for the inconvenience. Original advisory details: Jann Horn discovered that the Linux kernel's implementation of random seed data reported that it was in a ready state before it had gathered sufficient entropy. An attacker could use this to expose sensitive information. (CVE-2018-1108) Wen Xu discovered that the ext4 file system implementation in the Linux kernel did not properly initialize the crc32c checksum driver. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-1094) It was discovered that the cdrom driver in the Linux kernel contained an incorrect bounds check. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-10940) Wen Xu discovered that the ext4 file system implementation in the Linux kernel did not properly validate xattr sizes. A local attacker could use this to causea denial of service (system crash). (CVE-2018-1095) Jann Horn discovered that the 32 bit adjtimex() syscall implementation for 64 bit Linux kernels did not properly initialize memory returned to user space in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-11508) It was discovered that an information leak vulnerability existed in the floppy driver in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-7755) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1014-gcp 4.15.0-1014.14 linux-image-4.15.0-1016-aws 4.15.0-1016.16 linux-image-4.15.0-1016-kvm 4.15.0-1016.16 linux-image-4.15.0-1018-azure 4.15.0-1018.18 linux-image-4.15.0-29-generic 4.15.0-29.31 linux-image-4.15.0-29-generic-lpae 4.15.0-29.31 linux-image-4.15.0-29-lowlatency 4.15.0-29.31 linux-image-4.15.0-29-snapdragon 4.15.0-29.31 linux-image-aws 4.15.0.1016.16 linux-image-azure 4.15.0.1018.18 linux-image-gcp 4.15.0.1014.16 linux-image-generic 4.15.0.29.31 linux-image-generic-lpae 4.15.0.29.31 linux-image-gke 4.15.0.1014.16 linux-image-kvm 4.15.0.1016.16 linux-image-lowlatency 4.15.0.29.31 linux-image-oem 4.15.0.1012.14 linux-image-snapdragon 4.15.0.29.31 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 thisas well. References: https://ubuntu.com/security/notices/USN-3718-1 https://bugs.launchpad.net/ubuntu/+bug/1779827, https://ubuntu.com/security/notices/USN-3695-1 Package Information: https://launchpad.net/ubuntu/+source/linux/4.15.0-29.31 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1016.16 https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1018.18 https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1014.14 https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1016.16 https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1012.15 . An update addressing the Linux kernel regression leading to boot issues in Ubuntu 20.04 LTS is now available, please implement it swiftly.. Ubuntu Kernel Update, Boot Failure Fix, Linux Kernel Security. . Severity: Important. LinuxSecurity.com Team
Jul 21, 2018
•Important
Ubuntu
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Community Poll
What got you started with Linux?
Search Topics
Powered By
Linux Security - Your source for Top Linux News, Advisories, HOWTOs and Feature Releases
QUICK LINKS
subscribe to newsletters!
Like staying secure? So do we.
Sign up for updates, tips, and alerts!