[USN-5517-1] Linux kernel (OEM) vulnerabilities

========================================================================== Ubuntu Security Notice USN-5517-1 July 13, 2022
linux-oem-5.14 vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.04 LTS
Several security issues were fixed in the Linux kernel.
Software Description: – linux-oem-5.14: Linux kernel for OEM systems
It was discovered that the Atheros ath9k wireless device driver in the Linux kernel did not properly handle some 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-2022-1679)
It was discovered that the virtio RPMSG bus driver in the Linux kernel contained a double-free vulnerability in certain error conditions. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-34494)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04 LTS: linux-image-5.14.0-1045-oem 5.14.0-1045.51 linux-image-oem-20.04 linux-image-oem-20.04b linux-image-oem-20.04c linux-image-oem-20.04d
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-5517-1 CVE-2022-1679, CVE-2022-34494
Package Information: launchpad.net/ubuntu/+source/linux-oem-5.14/5.14.0-1045.51