01 Record

CVE-2026-31436

dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 Description

dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.45% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 39.3% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-19.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-04-22 13:53Z6 MO AGO

Last updated

2026-10-19 18:35Z9 DAYS AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-758Reliance on Undefined, Unspecified, or Implementation-Defined BehaviorClass
CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

397bb12d8a81bc00b0b8c929e21e4a775104f805275dc5d82f7aa9da9dcc3553

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxaa8d18becc0c14aa3eb46d6d1b81450446e11b87 to < e21da2ad8844585040fe4b82be1ad2fe99d40074, aa8d18becc0c14aa3eb46d6d1b81450446e11b87 to < 82656e8daf8de00935ae91b91bed43f4d6e0d644, aa8d18becc0c14aa3eb46d6d1b81450446e11b87 to < 0e4f43779d550e559be13a5cdb763bad92c4cc99, aa8d18becc0c14aa3eb46d6d1b81450446e11b87 to < e1c9866173c5f8521f2d0768547a01508cb9ff27, 6.8—

06 References

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

07 Fixed in

Debian 13

linux
Fixed in 6.12.85-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.19.11-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.