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Ubuntu 22.04 LTS: USN-6606-1 critical: kernel race condition DoS

ubuntu
Calendar Grey January 25, 2024
Dist Ubuntu Esm H88
Important update alert USN-6607-2 addresses vulnerabilities in the Ubuntu kernel, necessitating user action to safeguard systems against potential threats.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-6.1: Linux kernel for OEM systems

Details:

It was discovered that a race condition existed in the Bluetooth subsystem

of the Linux kernel, 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-2023-51779)

It was discovered that the CIFS network file system implementation in the

Linux kernel did not properly validate the server frame size in certain

situation, leading to an out-of-bounds read vulnerability. An attacker

could use this to construct a malicious CIFS image that, when operated on,

could cause a denial of service (system crash) or possibly expose sensitive

information. (CVE-2023-6606)

Xingyuan Mo discovered that the netfilter subsystem in the Linux kernel did

not properly handle inactive elements in its PIPAPO data structure, leading

to a use-after-free...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory code execution Ubuntu kernel Denial of Service system crash

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS:
   linux-image-6.1.0-1029-oem      6.1.0-1029.29
   linux-image-oem-22.04           6.1.0.1029.30
   linux-image-oem-22.04a          6.1.0.1029.30
   linux-image-oem-22.04b          6.1.0.1029.30
   linux-image-oem-22.04c          6.1.0.1029.30

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-6606-1

CVE-2023-51779, CVE-2023-6606, CVE-2023-6817, CVE-2023-6931,

CVE-2024-0193

Severity
critical
Lowest
Low
Medium
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Critical

Ubuntu Security Notice USN-6606-1

Topics%20covered

Topics Covered

security advisory code execution Ubuntu kernel Denial of Service system crash

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-6.1/6.1.0-1029.29

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