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CVE-2026-31436
dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
Critical9.8EPSS 0.46%
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.46% · top 60% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
- affected aa8d18becc0c14aa3eb46d6d1b81450446e11b87 – < e21da2ad8844585040fe4b82be1ad2fe99d40074
- affected aa8d18becc0c14aa3eb46d6d1b81450446e11b87 – < 82656e8daf8de00935ae91b91bed43f4d6e0d644
- affected aa8d18becc0c14aa3eb46d6d1b81450446e11b87 – < 0e4f43779d550e559be13a5cdb763bad92c4cc99
- affected aa8d18becc0c14aa3eb46d6d1b81450446e11b87 – < e1c9866173c5f8521f2d0768547a01508cb9ff27
- affected 6.8
- unaffected < 6.8
- unaffected 6.12.80 – ≤ 6.12.*
- unaffected 6.18.21 – ≤ 6.18.*
- unaffected 6.19.11 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References (4)
- https://git.kernel.org/stable/c/e21da2ad8844585040fe4b82be1ad2fe99d40074 (opens in a new tab)
- https://git.kernel.org/stable/c/82656e8daf8de00935ae91b91bed43f4d6e0d644 (opens in a new tab)
- https://git.kernel.org/stable/c/0e4f43779d550e559be13a5cdb763bad92c4cc99 (opens in a new tab)
- https://git.kernel.org/stable/c/e1c9866173c5f8521f2d0768547a01508cb9ff27 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-31436)Record last updated .