CVE-2023-32269: Use After Free

Published May 5, 2023
·
Updated

An issue was discovered in the Linux kernel before 6.1.11. In net/netrom/afnetrom.c, there is a use-after-free because accept is also allowed for a successfully connected AFNETROM socket. However, in order for an attacker to exploit this, the system must have netrom routing configured or the attacker must have the CAPNETADMIN capability.

Affected Software

2 affected componentsFixes available
Linux Linux kernel<6.1.11
debian/linux
5.10.223-15.10.234-16.1.129-16.1.135-16.12.25-16.12.27-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1Fixed in 6.12.27-1
  2. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Fixed in 6.1.11

Event History

May 5, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
05:15 PM
Description
Jan 12, 2024
Data Sourced
via Launchpad·12:20 AM
Description
Apr 28, 2025
Data Sourced
via Ubuntu·02:13 PM
RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2023-32269?

CVE-2023-32269 has a medium severity due to the potential for a use-after-free vulnerability in the Linux kernel.

2

How do I fix CVE-2023-32269?

You can fix CVE-2023-32269 by upgrading to Linux kernel version 6.1.11 or later.

3

What are the affected versions for CVE-2023-32269?

CVE-2023-32269 affects Linux kernel versions prior to 6.1.11.

4

Who is affected by CVE-2023-32269?

Users who have netrom routing configured and are running vulnerable versions of the Linux kernel are at risk for CVE-2023-32269.

5

Is CVE-2023-32269 exploitable remotely?

CVE-2023-32269 can potentially be exploited remotely if the affected system is configured to use netrom routing.

Contact

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