CVE-2026-23039 (GCVE-0-2026-23039)

Vulnerability from cvelistv5 – Published: 2026-01-31 11:42 – Updated: 2026-01-31 11:42
VLAI?
Title
drm/gud: fix NULL fb and crtc dereferences on USB disconnect
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/gud: fix NULL fb and crtc dereferences on USB disconnect On disconnect drm_atomic_helper_disable_all() is called which sets both the fb and crtc for a plane to NULL before invoking a commit. This causes a kernel oops on every display disconnect. Add guards for those dereferences.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 73cfd166e045769a1b42d36897accaa6e06b8102 , < a255ec07f91d4c73a361a28b7a3d82f5710245f1 (git)
Affected: 73cfd166e045769a1b42d36897accaa6e06b8102 , < dc2d5ddb193e363187bae2ad358245642d2721fb (git)
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    Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.7 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc6 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.