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Ubuntu Security Notice USN-6707-2

Ubuntu Security Notice USN-6707-2
Posted Mar 21, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6707-2 - 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 or possibly execute arbitrary code. 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 or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2024-1085, CVE-2024-1086
SHA-256 | 5a61fb451857004e26d020b0c774144828ef079142309d729e79b3b726df05ca

Ubuntu Security Notice USN-6707-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6707-2
March 21, 2024

linux-laptop vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.10

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-laptop: Linux kernel for Lenovo X13s ARM laptops

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 23.10:
linux-image-6.5.0-1012-laptop 6.5.0-1012.15
linux-image-laptop-23.10 6.5.0.1012.15

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-6707-2
https://ubuntu.com/security/notices/USN-6707-1
CVE-2024-1085, CVE-2024-1086, CVE-2024-26597, CVE-2024-26599

Package Information:
https://launchpad.net/ubuntu/+source/linux-laptop/6.5.0-1012.15

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