CVE-2026-31436 | In the Linux kernel, the following vulnerability has been re… | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2026-31436
State: PUBLISHED
Assigner: Linux
Reserved: 2026-03-09 15:48 UTC
Published: 2026-04-22 13:53 UTC
Last updated: 2026-05-11 22:08 UTC
Vendor / Product: Linux / Linux
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

Affected products (2)

Vendor	Product	Platform	Versions
Linux	Linux	—	aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < e21da2ad8844585040fe4b82be1ad2fe99d40074, aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < 82656e8daf8de00935ae91b91bed43f4d6e0d644, aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < 0e4f43779d550e559be13a5cdb763bad92c4cc99, aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < e1c9866173c5f8521f2d0768547a01508cb9ff27
Linux	Linux	—	6.8, 0 < 6.8, 6.12.80 ≤ 6.12., 6.18.21 ≤ 6.18. …

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (4)