CVE-2026-31781

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/27ef84bba9b9d7b03418c60fbc6069ea0e87b13c
• https://git.kernel.org/stable/c/46a60ee8956ef1975f00455f614761c7ecedc09d
• https://git.kernel.org/stable/c/489f2ef2b908898d01df697dc4fe1476674be640
• https://git.kernel.org/stable/c/4a41c2b18fc05d30b718d2602cac339eae710b34
• https://git.kernel.org/stable/c/5bb398991f378ef74d90b14a6ea8b61ff96cc03a
• https://git.kernel.org/stable/c/d59c5d8539662d95887b4564f3f72ad38076a2d5
• https://git.kernel.org/stable/c/f0e441be08a2eab10b2d06fccfa267ee599dd6b3
• https://git.kernel.org/stable/c/f8995c2df519f382525ca4bc90553ad2ec611067