Advisory Published

USN-6541-1: GNU C Library vulnerabilities

First published: Thu Dec 07 2023(Updated: )

It was discovered that the GNU C Library was not properly handling certain memory operations. An attacker could possibly use this issue to cause a denial of service (application crash). (CVE-2023-4806, CVE-2023-4813) It was discovered that the GNU C library was not properly implementing a fix for CVE-2023-4806 in certain cases, which could lead to a memory leak. An attacker could possibly use this issue to cause a denial of service (application crash). This issue only affected Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2023-5156)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libc-bin<2.37-0ubuntu2.2
2.37-0ubuntu2.2
Ubuntu=23.04
All of
ubuntu/libc6<2.37-0ubuntu2.2
2.37-0ubuntu2.2
Ubuntu=23.04
All of
ubuntu/libc-bin<2.35-0ubuntu3.5
2.35-0ubuntu3.5
Ubuntu=22.04
All of
ubuntu/libc6<2.35-0ubuntu3.5
2.35-0ubuntu3.5
Ubuntu=22.04
All of
ubuntu/libc-bin<2.31-0ubuntu9.14
2.31-0ubuntu9.14
Ubuntu=20.04
All of
ubuntu/libc6<2.31-0ubuntu9.14
2.31-0ubuntu9.14
Ubuntu=20.04
All of
ubuntu/libc-bin<2.27-3ubuntu1.6+esm1
2.27-3ubuntu1.6+esm1
Ubuntu=18.04
All of
ubuntu/libc6<2.27-3ubuntu1.6+esm1
2.27-3ubuntu1.6+esm1
Ubuntu=18.04
All of
ubuntu/libc-bin<2.23-0ubuntu11.3+esm5
2.23-0ubuntu11.3+esm5
Ubuntu=16.04
All of
ubuntu/libc6<2.23-0ubuntu11.3+esm5
2.23-0ubuntu11.3+esm5
Ubuntu=16.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this advisory?

    The vulnerability ID for this advisory is USN-6541-1.

  • What is the severity of USN-6541-1?

    The severity of USN-6541-1 is not mentioned in the provided information.

  • What software is affected by USN-6541-1?

    The software affected by USN-6541-1 is GNU C Library with specific versions of libc-bin and libc6 on Ubuntu versions 23.04, 22.04, 20.04, 18.04, and 16.04.

  • What is the impact of USN-6541-1?

    USN-6541-1 could allow an attacker to cause a denial of service (application crash) due to improper handling of memory operations.

  • How do I fix USN-6541-1?

    To fix USN-6541-1, you need to update the affected GNU C Library packages (libc-bin and libc6) to the recommended versions.

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