CVE-2026-31781 (GCVE-0-2026-31781)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-05-01 14:15
VLAI?
Title
drm/ioc32: stop speculation on the drm_compat_ioctl path
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/ioc32: stop speculation on the drm_compat_ioctl path The drm compat ioctl path takes a user controlled pointer, and then dereferences it into a table of function pointers, the signature method of spectre problems. Fix this up by calling array_index_nospec() on the index to the function pointer list.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 505b5240329b922f21f91d5b5d1e535c805eca6d , < 46a60ee8956ef1975f00455f614761c7ecedc09d (git)
Affected: 505b5240329b922f21f91d5b5d1e535c805eca6d , < 5bb398991f378ef74d90b14a6ea8b61ff96cc03a (git)
Affected: 505b5240329b922f21f91d5b5d1e535c805eca6d , < d59c5d8539662d95887b4564f3f72ad38076a2d5 (git)
Affected: 505b5240329b922f21f91d5b5d1e535c805eca6d , < 489f2ef2b908898d01df697dc4fe1476674be640 (git)
Affected: 505b5240329b922f21f91d5b5d1e535c805eca6d , < 4a41c2b18fc05d30b718d2602cac339eae710b34 (git)
Affected: 505b5240329b922f21f91d5b5d1e535c805eca6d , < f0e441be08a2eab10b2d06fccfa267ee599dd6b3 (git)
Affected: 505b5240329b922f21f91d5b5d1e535c805eca6d , < 27ef84bba9b9d7b03418c60fbc6069ea0e87b13c (git)
Affected: 505b5240329b922f21f91d5b5d1e535c805eca6d , < f8995c2df519f382525ca4bc90553ad2ec611067 (git)
Affected: abc60edcfc87771ff244763d4d19c67766f5dd0f (git)
Affected: a2a840d6dcae960c2dfdf3fcb1b759e1b7d90663 (git)
Affected: 00279b505289f7529d9be2e78915d0483ffbd314 (git)
Affected: d04e6ea0cec9e7d6cba806508f657d2d0dc6cacf (git)
Affected: 7f3ebea19795eb38438cd3709fabf2afd53cf447 (git)
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    Linux Linux Affected: 4.20
Unaffected: 0 , < 4.20 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.134 , ≤ 6.6.* (semver)
Unaffected: 6.12.81 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • 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.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.