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VulnerabilityPublished Updated

CVE-2026-31540: Linux kernel · drm/i915/gt: Check set_default_submission() before deferencing

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in df1f4a7d9cf689b4e96c95255228896505f44c31 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 22:06 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch
Available – fixed in df1f4a7d9cf689b4e96c95255228896505f44c31, db8b1bebe81ffb410ddd746b6869f72e22420850, da6552d67012a1cf0585f2eb401d0c4abcf108c9 +4

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Apr 2026

  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 5 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ ff44ad51ebf8e4693bd66ae41aa37a6bc88a134f, < df1f4a7d9cf689b4e96c95255228896505f44c31
Fixed in
  • df1f4a7d9cf689b4e96c95255228896505f44c31
LinuxLinuxAffected
  • ≥ ff44ad51ebf8e4693bd66ae41aa37a6bc88a134f, < db8b1bebe81ffb410ddd746b6869f72e22420850
Fixed in
  • db8b1bebe81ffb410ddd746b6869f72e22420850
LinuxLinuxAffected
  • ≥ ff44ad51ebf8e4693bd66ae41aa37a6bc88a134f, < da6552d67012a1cf0585f2eb401d0c4abcf108c9
Fixed in
  • da6552d67012a1cf0585f2eb401d0c4abcf108c9
LinuxLinuxAffected
  • ≥ ff44ad51ebf8e4693bd66ae41aa37a6bc88a134f, < cf4b224ffb9a58181be32b64130fc36cf59c3192
Fixed in
  • cf4b224ffb9a58181be32b64130fc36cf59c3192
LinuxLinuxAffected
  • ≥ ff44ad51ebf8e4693bd66ae41aa37a6bc88a134f, < 0162ab3220bac870e43e229e6e3024d1a21c3f26
Fixed in
  • 0162ab3220bac870e43e229e6e3024d1a21c3f26
LinuxLinuxAffected
  • ≥ ff44ad51ebf8e4693bd66ae41aa37a6bc88a134f, < 2e20a886b443a71b573ceaed3ca7053d15380916
Fixed in
  • 2e20a886b443a71b573ceaed3ca7053d15380916

AI-suggested

A fix for this vulnerability is available in the Linux kernel as indicated by multiple fixed commit versions. Users should update their Linux kernel to a version that includes the fix (commit hashes provided). No additional mitigation is required once the kernel is updated.

Description

A vulnerability in the Linux kernel's i915 graphics driver occurs when the set_default_submission pointer is dereferenced without being checked for null. This happens if the i915 driver firmware binaries are missing, leading to a NULL pointer dereference during system suspend. The issue has been fixed by adding a check to ensure the pointer is set before dereferencing.

References

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