CVE-2026-31781

high

Description

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.

References

https://git.kernel.org/stable/c/f8995c2df519f382525ca4bc90553ad2ec611067

https://git.kernel.org/stable/c/f0e441be08a2eab10b2d06fccfa267ee599dd6b3

https://git.kernel.org/stable/c/d59c5d8539662d95887b4564f3f72ad38076a2d5

https://git.kernel.org/stable/c/5bb398991f378ef74d90b14a6ea8b61ff96cc03a

https://git.kernel.org/stable/c/4a41c2b18fc05d30b718d2602cac339eae710b34

https://git.kernel.org/stable/c/489f2ef2b908898d01df697dc4fe1476674be640

https://git.kernel.org/stable/c/46a60ee8956ef1975f00455f614761c7ecedc09d

https://git.kernel.org/stable/c/27ef84bba9b9d7b03418c60fbc6069ea0e87b13c

Details

Source: Mitre, NVD

Published: 2026-05-01

Updated: 2026-05-01

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 8.4

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High