CVE-2026-31436

critical

Published 2026-04-22 · Modified 2026-05-19

CVSS v3

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2

—

VIR risk

9.8

Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc() At the end of this function, d is the traversal cursor of flist, but the code completes found instead. This can lead to issues such as NULL pointer dereferences, double completion, or descriptor leaks. Fix this by completing d instead of found in the final list_for_each_entry_safe() loop.

Predictions

Exploit likelihood

97%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-31436

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-31436.html

vendor Authored 2026-05-27

Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/e21da2ad8844585040fe4b82be1ad2fe99d40074

vendor Authored 2026-05-27

Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/e1c9866173c5f8521f2d0768547a01508cb9ff27

vendor Authored 2026-05-27

Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/82656e8daf8de00935ae91b91bed43f4d6e0d644

vendor Authored 2026-05-27

Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/0e4f43779d550e559be13a5cdb763bad92c4cc99

OS impact

OS	Version	Status	Fixed in
sles		affected
debian	bookworm	fixed	`0`
debian	bullseye	fixed	`0`
debian	forky	fixed	`6.19.11-1`
debian	sid	fixed	`6.19.11-1`
debian	trixie	fixed	`6.12.85-1`
linux-kernel		affected	`6.12.80`
linux-kernel	7.0	affected

References

CWEs

CWE-476

Verify integrity in audit chain (admin only). AS-IS.