USN-6056-1: Linux kernel (OEM) vulnerability
5 May 2023
The guest VM system could be made to crash or expose sensitive information.
Releases
Packages
- linux-oem-6.1 - Linux kernel for OEM systems
Details
It was discovered that a race condition existed in the Xen transport layer
implementation for the 9P file system protocol in the Linux kernel, leading
to a use-after-free vulnerability. A local attacker could use this to cause
a denial of service (guest crash) or expose sensitive information (guest
kernel memory).
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 22.04
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
Related notices
- USN-6071-1: linux-headers-5.17.0-1031-oem, linux-image-oem-22.04, linux-buildinfo-5.17.0-1031-oem, linux-modules-iwlwifi-5.17.0-1031-oem, linux-modules-ivsc-5.17.0-1031-oem, linux-headers-oem-22.04, linux-modules-5.17.0-1031-oem, linux-modules-ivsc-oem-22.04, linux-modules-ipu6-5.17.0-1031-oem, linux-oem-5.17-tools-host, linux-tools-oem-22.04, linux-oem-22.04a, linux-oem-5.17, linux-tools-5.17.0-1031-oem, linux-image-oem-22.04a, linux-image-5.17.0-1031-oem, linux-oem-5.17-tools-5.17.0-1031, linux-modules-iwlwifi-oem-22.04a, linux-modules-ivsc-oem-22.04a, linux-image-unsigned-5.17.0-1031-oem, linux-modules-ipu6-oem-22.04, linux-headers-oem-22.04a, linux-tools-oem-22.04a, linux-modules-iwlwifi-oem-22.04, linux-oem-5.17-headers-5.17.0-1031, linux-oem-22.04, linux-modules-ipu6-oem-22.04a
- USN-6072-1: linux-tools-oem-22.04b, linux-image-6.0.0-1015-oem, linux-tools-6.0.0-1015-oem, linux-oem-22.04b, linux-oem-6.0-tools-6.0.0-1015, linux-oem-6.0-headers-6.0.0-1015, linux-headers-oem-22.04b, linux-oem-6.0, linux-image-oem-22.04b, linux-modules-ipu6-oem-22.04b, linux-modules-ivsc-6.0.0-1015-oem, linux-modules-iwlwifi-oem-22.04b, linux-headers-6.0.0-1015-oem, linux-modules-6.0.0-1015-oem, linux-image-unsigned-6.0.0-1015-oem, linux-oem-6.0-tools-host, linux-buildinfo-6.0.0-1015-oem, linux-modules-ipu6-6.0.0-1015-oem, linux-modules-ivsc-oem-22.04b, linux-modules-iwlwifi-6.0.0-1015-oem