USN-6707-4: Linux kernel (Azure) vulnerabilities
28 March 2024
Several security issues were fixed in the Linux kernel.
Releases
Packages
- linux-azure-6.5 - Linux kernel for Microsoft Azure cloud systems
Details
Lonial Con discovered that the netfilter subsystem in the Linux kernel did
not properly handle element deactivation in certain cases, leading to a
use-after-free vulnerability. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2024-1085)
Notselwyn discovered that the netfilter subsystem in the Linux kernel did
not properly handle verdict parameters in certain cases, leading to a use-
after-free vulnerability. A local attacker could use this to cause a denial
of service (system crash) or possibly execute arbitrary code.
(CVE-2024-1086)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Network drivers;
- PWM drivers;
(CVE-2024-26597, CVE-2024-26599)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 22.04
-
linux-image-6.5.0-1017-azure
-
6.5.0-1017.17~22.04.1
-
linux-image-6.5.0-1017-azure-fde
-
6.5.0-1017.17~22.04.1
-
linux-image-azure
-
6.5.0.1017.17~22.04.1
-
linux-image-azure-fde
-
6.5.0.1017.17~22.04.1
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.