Ubuntu alert USN-4255-1 (linux, linux-aws, linux-oem)
| From: | Steve Beattie <steve.beattie@canonical.com> | |
| To: | ubuntu-security-announce@lists.ubuntu.com | |
| Subject: | [USN-4255-1] Linux kernel vulnerabilities | |
| Date: | Mon, 27 Jan 2020 19:53:51 -0800 | |
| Message-ID: | <20200128035351.GC7355@nxnw.org> |
========================================================================== Ubuntu Security Notice USN-4255-1 January 28, 2020 linux, linux-aws, linux-oem vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - 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-oem: Linux kernel for OEM processors Details: It was discovered that the Linux kernel did not properly clear data structures on context switches for certain Intel graphics processors. A local attacker could use this to expose sensitive information. (CVE-2019-14615) It was discovered that a race condition can lead to a use-after-free while destroying GEM contexts in the i915 driver for the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-7053) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1058-aws 4.15.0-1058.60 linux-image-4.15.0-1067-oem 4.15.0-1067.77 linux-image-4.15.0-76-generic 4.15.0-76.86 linux-image-4.15.0-76-generic-lpae 4.15.0-76.86 linux-image-4.15.0-76-lowlatency 4.15.0-76.86 linux-image-aws 4.15.0.1058.59 linux-image-aws-lts-18.04 4.15.0.1058.59 linux-image-generic 4.15.0.76.78 linux-image-generic-lpae 4.15.0.76.78 linux-image-lowlatency 4.15.0.76.78 linux-image-oem 4.15.0.1067.71 linux-image-powerpc-e500mc 4.15.0.76.78 linux-image-powerpc-smp 4.15.0.76.78 linux-image-powerpc64-emb 4.15.0.76.78 linux-image-powerpc64-smp 4.15.0.76.78 linux-image-virtual 4.15.0.76.78 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://usn.ubuntu.com/4255-1 CVE-2019-14615, CVE-2020-7053 Package Information: https://launchpad.net/ubuntu/+source/linux/4.15.0-76.86 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-105... https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-106... -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security...