USN-6653-2: Linux kernel (AWS) vulnerabilities

Published Feb 28, 2024
·
Updated

It was discovered that a race condition existed in the ATM (Asynchronous Transfer Mode) 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-2023-51780) It was discovered that a race condition existed in the AppleTalk networking 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-2023-51781) Zhenghan Wang discovered that the generic ID allocator implementation in the Linux kernel did not properly check for null bitmap when releasing IDs. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-6915) Robert Morris discovered that the CIFS network file system implementation in the Linux kernel did not properly validate certain server commands fields, leading to an out-of-bounds read vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2024-0565) Jann Horn discovered that the TLS subsystem in the Linux kernel did not properly handle spliced messages, leading to an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2024-0646)

Affected Software

1 affected component
Canonical Linux kernel (AWS)

Event History

May 9, 2025
Advisory Published
via Ubuntu·08:38 PM
Data Sourced
via Ubuntu·08:38 PM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of USN-6653-2?

The severity of USN-6653-2 is high due to its potential to cause a system crash or arbitrary code execution.

2

How do I fix USN-6653-2?

To fix USN-6653-2, upgrade to the patched versions of the affected Linux kernel packages as specified in the advisory.

3

What is the cause of the vulnerability in USN-6653-2?

The vulnerability in USN-6653-2 is caused by a race condition in the ATM subsystem of the Linux kernel, leading to a use-after-free condition.

4

Who can exploit the vulnerability in USN-6653-2?

A local attacker with access to the system can exploit the vulnerability in USN-6653-2.

5

What are the affected versions in USN-6653-2?

Affected versions in USN-6653-2 include specific kernel versions of Ubuntu 22.04 and 20.04 as detailed in the advisory.

Contact

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