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VulnerabilityPublished Updated

CVE-2024-38559: Linux kernel · scsi: qedf: Ensure the copied buf is NUL terminated

Affects Linux kernelSource GCVE Database

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Not known to be exploited · CVSS 4.4 Medium · fixed in 5.4.0-1130.140~18.04.1 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 15:18 UTC

CVSS 3.1 base score
4.4Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 5.4.0-1130.140~18.04.1, 5.4.0-1135.142~18.04.1, 5.4.0-1134.143~18.04.1 +73
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Jun 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Ubuntu 24.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-40.40
Fixed in
  • 6.8.0-40.40
Ubuntu 24.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1013.14
Fixed in
  • 6.8.0-1013.14
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1012.14
Fixed in
  • 6.8.0-1012.14
Ubuntu 24.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1012.13
Fixed in
  • 6.8.0-1012.13
Ubuntu 24.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1008.11
Fixed in
  • 6.8.0-1008.11
Ubuntu 24.04 LTSlinux-ibmpkg:deb/ubuntu/linux-ibm?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1010.10
Fixed in
  • 6.8.0-1010.10

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Official patches are available and have been released by Ubuntu for affected kernel versions. Users should apply the security updates provided for their Linux kernel packages to remediate this vulnerability. No additional mitigation actions are required beyond applying the vendor-provided fixes.

Description

CVE-2024-38559 is a vulnerability in the Linux kernel's SCSI qedf driver where a user-supplied buffer copied from userspace is not guaranteed to be NUL terminated. This can lead to an out-of-bounds read when the kernel function kstrtouint processes the buffer. The issue is fixed by replacing the buffer copy method with one that ensures NUL termination. Multiple Linux kernel versions, including various 4.11.x and 4.13.x builds and several 5.4.x builds for Ubuntu 18.04, are affected. The vulnerability has a medium severity score and does not impact confidentiality or integrity but can cause availability issues. Official patches are available and have been released by Ubuntu.

References

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