[USN-5916-1] Linux kernel vulnerability
Rodrigo Figueiredo Zaiden
rodrigo.zaiden at canonical.com
Fri Mar 3 01:15:23 UTC 2023
==========================================================================
Ubuntu Security Notice USN-5916-1
March 03, 2023
linux vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 ESM
Summary:
The system could be made to crash or run programs as an administrator.
Software Description:
- linux: Linux kernel
Details:
Jann Horn discovered that the Linux kernel did not properly track memory
allocations for anonymous VMA mappings in some situations, leading to
potential data structure reuse. A local 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 14.04 ESM:
linux-image-3.13.0-192-generic 3.13.0-192.243
linux-image-3.13.0-192-lowlatency 3.13.0-192.243
linux-image-generic 3.13.0.192.202
linux-image-generic-lts-trusty 3.13.0.192.202
linux-image-lowlatency 3.13.0.192.202
linux-image-server 3.13.0.192.202
linux-image-virtual 3.13.0.192.202
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-5916-1
CVE-2022-42703
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