========================================================================== Ubuntu Security Notice USN-5493-2 July 01, 2022
linux-hwe-5.13 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: The system could be made to crash under certain conditions. Software Description: - linux-hwe-5.13: 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 20.04 LTS: linux-image-5.13.0-52-generic 5.13.0-52.59~20.04.1 linux-image-5.13.0-52-generic-64k 5.13.0-52.59~20.04.1 linux-image-5.13.0-52-generic-lpae 5.13.0-52.59~20.04.1 linux-image-5.13.0-52-lowlatency 5.13.0-52.59~20.04.1 linux-image-generic-64k-hwe-20.04 5.13.0.52.59~20.04.31 linux-image-generic-hwe-20.04 5.13.0.52.59~20.04.31 linux-image-generic-lpae-hwe-20.04 5.13.0.52.59~20.04.31 linux-image-lowlatency-hwe-20.04 5.13.0.52.59~20.04.31 linux-image-virtual-hwe-20.04 5.13.0.52.59~20.04.31 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://ubuntu.com/security/notices/USN-5493-2 https://ubuntu.com/security/notices/USN-5493-1 CVE-2022-28388 Package Information: https://launchpad.net/ubuntu/+source/linux-hwe-5.13/5.13.0-52.59~20.04.1
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