USN-5783-1: Linux kernel (OEM) vulnerability
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Ubuntu Security Notice USN-5783-1
December 16, 2022
linux-oem-5.17 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.04 LTS
Summary:
The system could be made to crash or run programs as an administrator.
Software Description:
- linux-oem-5.17: Linux kernel for OEM systems
Details:
Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation
in the Linux kernel contained multiple use-after-free vulnerabilities. A
physically proximate 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 22.04 LTS:
linux-image-5.17.0-1025-oem 5.17.0-1025.26
linux-image-oem-22.04 5.17.0.1025.23
linux-image-oem-22.04a 5.17.0.1025.23
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-5783-1
CVE-2022-42896
Package Information:
https://launchpad.net/ubuntu/+source/linux-oem-5.17/5.17.0-1025.26
A Linux kernel (OEM) security update has been released for Ubuntu Linux 22.04 LTS.
