CRITICAL: CVE-2026-31436 (CVSS 9.8) — multiple products

CVE: CVE-2026-31436

CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: CRITICAL

Status: Critical advisory

Affected

_See vendor advisory_

Summary

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.

Verified Sources

References

https://git.kernel.org/stable/c/0e4f43779d550e559be13a5cdb763bad92c4cc99
https://git.kernel.org/stable/c/82656e8daf8de00935ae91b91bed43f4d6e0d644
https://git.kernel.org/stable/c/e1c9866173c5f8521f2d0768547a01508cb9ff27
https://git.kernel.org/stable/c/e21da2ad8844585040fe4b82be1ad2fe99d40074

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._

Lyrie Verdict

A vulnerability of this severity is exactly what Lyrie's anti-rogue-AI defense is built for: continuous, autonomous monitoring that doesn't wait for human reaction time.

#critical