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Security Advisory

USN-6737-1: GNU C Library vulnerability

USN-6737-1: GNU C Library vulnerability




Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 22.04


Charles Fol discovered that the GNU C Library iconv feature incorrectly handled certain input sequences. An attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. Update Instructions: Run `sudo pro fix USN-6737-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: glibc-doc – 2.31-0ubuntu9.15 glibc-source – 2.31-0ubuntu9.15 libc-bin – 2.31-0ubuntu9.15 libc-dev-bin – 2.31-0ubuntu9.15 libc6 – 2.31-0ubuntu9.15 libc6-amd64 – 2.31-0ubuntu9.15 libc6-armel – 2.31-0ubuntu9.15 libc6-dev – 2.31-0ubuntu9.15 libc6-dev-amd64 – 2.31-0ubuntu9.15 libc6-dev-armel – 2.31-0ubuntu9.15 libc6-dev-i386 – 2.31-0ubuntu9.15 libc6-dev-s390 – 2.31-0ubuntu9.15 libc6-dev-x32 – 2.31-0ubuntu9.15 libc6-i386 – 2.31-0ubuntu9.15 libc6-lse – 2.31-0ubuntu9.15 libc6-pic – 2.31-0ubuntu9.15 libc6-prof – 2.31-0ubuntu9.15 libc6-s390 – 2.31-0ubuntu9.15 libc6-x32 – 2.31-0ubuntu9.15 locales – 2.31-0ubuntu9.15 locales-all – 2.31-0ubuntu9.15 nscd – 2.31-0ubuntu9.15 No subscription required

CVEs contained in this USN include: CVE-2024-2961.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • cflinuxfs4
    • All versions prior to 1.93.0
  • Jammy Stemcells
    • 1.x versions prior to 1.439
    • All other stemcells not listed.
  • CF Deployment
    • All versions with Jammy Stemcells prior to 1.439


Users of affected products are strongly encouraged to follow the mitigations below.

The Cloud Foundry project recommends upgrading the following releases:

  • cflinuxfs4
    • Upgrade all versions to 1.93.0 or greater
  • Jammy Stemcells
    • Upgrade 1.x versions to 1.439 or greater
    • All other stemcells should be upgraded to the latest version available on
  • CF Deployment
    • For all versions, upgrade Jammy Stemcells to 1.439 or greater


2024-05-23: Initial vulnerability report published.

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR