[USN-5353-1] Linux kernel (OEM) vulnerability


========================================================================== Ubuntu Security Notice USN-5353-1 March 28, 2022
linux-oem-5.14 vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.04 LTS
Summary:
The system could be made to crash or run programs as an administrator.
Software Description: – linux-oem-5.14: Linux kernel for OEM systems
Details:
It was discovered that the IPsec implementation in the Linux kernel did not properly allocate enough memory when performing ESP transformations, leading to a heap-based buffer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04 LTS: linux-image-5.14.0-1031-oem 5.14.0-1031.34 linux-image-oem-20.04 5.14.0.1031.28 linux-image-oem-20.04b 5.14.0.1031.28 linux-image-oem-20.04c 5.14.0.1031.28 linux-image-oem-20.04d 5.14.0.1031.28
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: ubuntu.com/security/notices/USN-5353-1 CVE-2022-27666
Package Information: launchpad.net/ubuntu/+source/linux-oem-5.14/5.14.0-1031.34