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 -7 articles for you...
172
security advisorydenial of serviceubuntuUbuntu 14.04 LTS USN-2447-2 Moderate: Linux Kernel Regression DoS
USN-2447-1 introduced a regression in the Linux kernel.. =========================================================================Ubuntu Security Notice USN-2447-2 December 19, 2014 linux-lts-utopic regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 LTS Summary: USN-2447-1 introduced a regression in the Linux kernel. Software Description: - linux-lts-utopic: Linux hardware enablement kernel from Utopic Details: USN-2447-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated regression TCP Throughput drops to zero for several drivers after upgrading. This update fixes the problem. We apologize for the inconvenience. Original advisory details: An information leak in the Linux kernel was discovered that could leak the high 16 bits of the kernel stack address on 32-bit Kernel Virtual Machine (KVM) paravirt guests. A user in the guest OS could exploit this leak to obtain information that could potentially be used to aid in attacking the kernel. (CVE-2014-8134) Rabin Vincent, Robert Swiecki, Russell King discovered that the ftrace subsystem of the Linux kernel does not properly handle private syscall numbers. A local user could exploit this flaw to cause a denial of service (OOPS). (CVE-2014-7826) A flaw in the handling of malformed ASCONF chunks by SCTP (Stream Control Transmission Protocol) implementation in the Linux kernel was discovered. A remote attacker could exploit this flaw to cause a denial of service (system crash). (CVE-2014-3673) A flaw in the handling of duplicate ASCONF chunks by SCTP (Stream Control Transmission Protocol) implementation in the Linux kernel was discovered. A remote attacker could exploit this flaw to cause a denial of service (panic). (CVE-2014-3687) It was discovered that excessive queuing by SCTP (Stream Control Transmission Protocol) implementation in the Linux kernelcan cause memory pressure. A remote attacker could exploit this flaw to cause a denial of service. (CVE-2014-3688) Rabin Vincent, Robert Swiecki, Russell Kinglaw discovered a flaw in how the perf subsystem of the Linux kernel handles private systecall numbers. A local user could exploit this to cause a denial of service (OOPS) or bypass ASLR protections via a crafted application. (CVE-2014-7825) Andy Lutomirski discovered a flaw in how the Linux kernel handles pivot_root when used with a chroot directory. A local user could exploit this flaw to cause a denial of service (mount-tree loop). (CVE-2014-7970) Dmitry Monakhov discovered a race condition in the ext4_file_write_iter function of the Linux kernel's ext4 filesystem. A local user could exploit this flaw to cause a denial of service (file unavailability). (CVE-2014-8086) The KVM (kernel virtual machine) subsystem of the Linux kernel miscalculates the number of memory pages during the handling of a mapping failure. A guest OS user could exploit this to cause a denial of service (host OS page unpinning) or possibly have unspecified other impact by leveraging guest OS privileges. (CVE-2014-8369) Andy Lutomirski discovered that the Linux kernel does not properly handle faults associated with the Stack Segment (SS) register on the x86 architecture. A local attacker could exploit this flaw to cause a denial of service (panic). (CVE-2014-9090) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-3.16.0-28-generic 3.16.0-28.38~14.04.1 linux-image-3.16.0-28-generic-lpae 3.16.0-28.38~14.04.1 linux-image-3.16.0-28-lowlatency 3.16.0-28.38~14.04.1 linux-image-3.16.0-28-powerpc-e500mc 3.16.0-28.38~14.04.1 linux-image-3.16.0-28-powerpc-smp 3.16.0-28.38~14.04.1 linux-image-3.16.0-28-powerpc64-emb 3.16.0-28.38~14.04.1 linux-image-3.16.0-28-powerpc64-smp 3.16.0-28.38~14.04.1 After a standardsystem update you need to reboot your computer to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-2447-1 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1390604 Package Information: https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-28.38~14.04.1 . Ubuntu Security Notice USN-2447-2 addresses a critical regression in the Linux kernel for Ubuntu 14.04 LTS users.. Ubuntu Kernel Update, Linux Security Patch, Critical Security Update. . LinuxSecurity.com Team
Dec 19, 2014
Ubuntu
172
security advisorykernel updatesystem stabilityUbuntu 14.10 USN-2448-2 Moderate: Kernel TCP Throughput Issue
USN-2448-1 introduced a regression in the Linux kernel.. =========================================================================Ubuntu Security Notice USN-2448-2 December 19, 2014 linux regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.10 Summary: USN-2448-1 introduced a regression in the Linux kernel. Software Description: - linux: Linux kernel Details: USN-2448-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated regression TCP Throughput drops to zero for several drivers after upgrading. This update fixes the problem. We apologize for the inconvenience. Original advisory details: An information leak in the Linux kernel was discovered that could leak the high 16 bits of the kernel stack address on 32-bit Kernel Virtual Machine (KVM) paravirt guests. A user in the guest OS could exploit this leak to obtain information that could potentially be used to aid in attacking the kernel. (CVE-2014-8134) Rabin Vincent, Robert Swiecki, Russell King discovered that the ftrace subsystem of the Linux kernel does not properly handle private syscall numbers. A local user could exploit this flaw to cause a denial of service (OOPS). (CVE-2014-7826) A flaw in the handling of malformed ASCONF chunks by SCTP (Stream Control Transmission Protocol) implementation in the Linux kernel was discovered. A remote attacker could exploit this flaw to cause a denial of service (system crash). (CVE-2014-3673) A flaw in the handling of duplicate ASCONF chunks by SCTP (Stream Control Transmission Protocol) implementation in the Linux kernel was discovered. A remote attacker could exploit this flaw to cause a denial of service (panic). (CVE-2014-3687) It was discovered that excessive queuing by SCTP (Stream Control Transmission Protocol) implementation in the Linux kernel can cause memory pressure. A remote attacker couldexploit this flaw to cause a denial of service. (CVE-2014-3688) Rabin Vincent, Robert Swiecki, Russell Kinglaw discovered a flaw in how the perf subsystem of the Linux kernel handles private systecall numbers. A local user could exploit this to cause a denial of service (OOPS) or bypass ASLR protections via a crafted application. (CVE-2014-7825) Andy Lutomirski discovered a flaw in how the Linux kernel handles pivot_root when used with a chroot directory. A local user could exploit this flaw to cause a denial of service (mount-tree loop). (CVE-2014-7970) Dmitry Monakhov discovered a race condition in the ext4_file_write_iter function of the Linux kernel's ext4 filesystem. A local user could exploit this flaw to cause a denial of service (file unavailability). (CVE-2014-8086) The KVM (kernel virtual machine) subsystem of the Linux kernel miscalculates the number of memory pages during the handling of a mapping failure. A guest OS user could exploit this to cause a denial of service (host OS page unpinning) or possibly have unspecified other impact by leveraging guest OS privileges. (CVE-2014-8369) Andy Lutomirski discovered that the Linux kernel does not properly handle faults associated with the Stack Segment (SS) register on the x86 architecture. A local attacker could exploit this flaw to cause a denial of service (panic). (CVE-2014-9090) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.10: linux-image-3.16.0-28-generic 3.16.0-28.38 linux-image-3.16.0-28-generic-lpae 3.16.0-28.38 linux-image-3.16.0-28-lowlatency 3.16.0-28.38 linux-image-3.16.0-28-powerpc-e500mc 3.16.0-28.38 linux-image-3.16.0-28-powerpc-smp 3.16.0-28.38 linux-image-3.16.0-28-powerpc64-emb 3.16.0-28.38 linux-image-3.16.0-28-powerpc64-smp 3.16.0-28.38 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-2448-1 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1390604 Package Information: https://launchpad.net/ubuntu/+source/linux/3.16.0-28.38 . Addressed regression impacting TCP performance on Ubuntu 14.10 post USN-2448-1. Critical update to enhance kernel stability and optimize network throughput.. Kernel Update, Ubuntu Security Fix, TCP Performance, Stability Improvements. . Severity: Important. LinuxSecurity.com Team
Dec 19, 2014
•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!