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VulnerabilityPublished Updated

CVE-2024-27028: Linux kernel · spi: spi-mt65xx: Fix NULL pointer access in interrupt handler

Affects Linux kernelSource GCVE Database

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Not known to be exploited · CVSS 6.5 Medium · fixed in 5.4.0-1128.138~18.04.1 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 15:21 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 5.4.0-1128.138~18.04.1, 5.4.0-1133.140~18.04.1, 5.4.0-1132.141~18.04.1 +65
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 May 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
  • <6.8.0-35.35
Fixed in
  • 6.8.0-35.35
Ubuntu 24.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1009.9
Fixed in
  • 6.8.0-1009.9
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1008.8
Fixed in
  • 6.8.0-1008.8
Ubuntu 24.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1008.9
Fixed in
  • 6.8.0-1008.9
Ubuntu 24.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1004.7
Fixed in
  • 6.8.0-1004.7
Ubuntu 24.04 LTSlinux-ibmpkg:deb/ubuntu/linux-ibm?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1006.6
Fixed in
  • 6.8.0-1006.6

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

AI-suggested

A patch is available and has been released in fixed Linux kernel versions including 5.4.0-1128.138~18.04.1 and later. Users should upgrade to these fixed kernel versions to remediate the vulnerability. No additional mitigation steps are required beyond applying the official kernel updates.

Description

A NULL pointer dereference vulnerability was identified and fixed in the spi-mt65xx driver of the Linux kernel. The issue occurs because the TX buffer in spi_transfer can be NULL, and the interrupt handler may attempt to write to this invalid memory, causing system crashes. The fix adds a check for the TX buffer before use to prevent this. This vulnerability affects certain versions of the Linux kernel, particularly those used in Ubuntu 18.04 and related distributions.

References

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