Home/CVE/In the Linux kernel, the following vulnerability has been resolved: drm/ioc32: stop speculation on the drm_compat_ioctl
CVE

CVE-2026-31781

In the Linux kernel, the following vulnerability has been resolved: drm/ioc32: stop speculation on the drm_compat_ioctl

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.

MEDIUM · CVSS 5.5 EPSS 0.00015
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
▤

Affected Products & Versions

13
linux kernel>= 3.16.63 and < 3.17
linux kernel>= 4.4.170 and < 4.5
linux kernel>= 4.9.148 and < 4.10
linux kernel>= 4.14.91 and < 4.15
linux kernel>= 4.19.13 and < 4.20
linux kernel>= 4.20.1 and < 5.10.253
linux kernel>= 5.11 and < 5.15.203
linux kernel>= 5.16 and < 6.1.168
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 May 2026 · 03:16 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://git.kernel.org/stable/c/27ef84bba9b9d7b03418c60fbc6069ea0e87b13cPatch
https://git.kernel.org/stable/c/46a60ee8956ef1975f00455f614761c7ecedc09dPatch
https://git.kernel.org/stable/c/489f2ef2b908898d01df697dc4fe1476674be640Patch
https://git.kernel.org/stable/c/4a41c2b18fc05d30b718d2602cac339eae710b34Patch
https://git.kernel.org/stable/c/5bb398991f378ef74d90b14a6ea8b61ff96cc03aPatch
https://git.kernel.org/stable/c/d59c5d8539662d95887b4564f3f72ad38076a2d5Patch
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