[USN-5493-1] Linux kernel vulnerability


========================================================================== Ubuntu Security Notice USN-5493-1 June 27, 2022
linux, linux-hwe vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.10 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS – Ubuntu 16.04 ESM
Summary:
The system could be made to crash under certain conditions.
Software Description: – linux: Linux kernel – linux-hwe: Linux hardware enablement (HWE) kernel
Details:
It was discovered that the 8 Devices USB2CAN interface implementation in the Linux kernel did not properly handle certain error conditions, leading to a double-free. A local attacker could possibly use this to cause a denial of service (system crash).
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: linux-image-5.13.0-52-generic 5.13.0-52.59 linux-image-5.13.0-52-generic-64k 5.13.0-52.59 linux-image-5.13.0-52-generic-lpae 5.13.0-52.59 linux-image-5.13.0-52-lowlatency 5.13.0-52.59 linux-image-generic 5.13.0.52.58 linux-image-generic-64k 5.13.0.52.58 linux-image-generic-lpae 5.13.0.52.58 linux-image-lowlatency 5.13.0.52.58 linux-image-oem-20.04 5.13.0.52.58 linux-image-virtual 5.13.0.52.58
Ubuntu 20.04 LTS: linux-image-5.4.0-121-generic 5.4.0-121.137 linux-image-5.4.0-121-generic-lpae 5.4.0-121.137 linux-image-5.4.0-121-lowlatency 5.4.0-121.137 linux-image-generic 5.4.0.121.122 linux-image-generic-lpae 5.4.0.121.122 linux-image-lowlatency 5.4.0.121.122 linux-image-oem 5.4.0.121.122 linux-image-oem-osp1 5.4.0.121.122 linux-image-virtual 5.4.0.121.122
Ubuntu 18.04 LTS: linux-image-4.15.0-188-generic 4.15.0-188.199 linux-image-4.15.0-188-generic-lpae 4.15.0-188.199 linux-image-4.15.0-188-lowlatency 4.15.0-188.199 linux-image-generic 4.15.0.188.173 linux-image-generic-lpae 4.15.0.188.173 linux-image-lowlatency 4.15.0.188.173 linux-image-virtual 4.15.0.188.173
Ubuntu 16.04 ESM: linux-image-4.15.0-188-generic 4.15.0-188.199~16.04.1 linux-image-4.15.0-188-lowlatency 4.15.0-188.199~16.04.1 linux-image-generic-hwe-16.04 4.15.0.188.175 linux-image-lowlatency-hwe-16.04 4.15.0.188.175 linux-image-oem 4.15.0.188.175 linux-image-virtual-hwe-16.04 4.15.0.188.175
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-5493-1 CVE-2022-28388
Package Information: launchpad.net/ubuntu/+source/linux/5.13.0-52.59 launchpad.net/ubuntu/+source/linux/5.4.0-121.137 launchpad.net/ubuntu/+source/linux/4.15.0-188.199