Critical severity · published Apr 22, 2026
CVE-2026-31436
dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
9.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
6.8 before 6.12.80; 6.13 before 6.18.21; 6.19 before 6.19.11; 7.0; 7.0; 7.0; +3 more · source: NVD
LI
Linux · Linux
aa8d18becc0c14aa3eb46d6d1b81450446e11b87 before e21da2ad8844585040fe4b82be1ad2fe99d40074; aa8d18becc0c14aa3eb46d6d1b81450446e11b87 before 82656e8daf8de00935ae91b91bed43f4d6e0d644; aa8d18becc0c14aa3eb46d6d1b81450446e11b87 before 0e4f43779d550e559be13a5cdb763bad92c4cc99; aa8d18becc0c14aa3eb46d6d1b81450446e11b87 before e1c9866173c5f8521f2d0768547a01508cb9ff27; 6.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31436
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-31436
Patch
https://git.kernel.org/stable/c/0e4f43779d550e559be13a5cdb763bad92c4cc99
Patch
https://git.kernel.org/stable/c/82656e8daf8de00935ae91b91bed43f4d6e0d644
Patch
https://git.kernel.org/stable/c/e1c9866173c5f8521f2d0768547a01508cb9ff27
Patch
https://git.kernel.org/stable/c/e21da2ad8844585040fe4b82be1ad2fe99d40074
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