CVE-2026-31436
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < e21da2ad8844585040fe4b82be1ad2fe99d40074 | affected |
| Linux | Linux | aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < 82656e8daf8de00935ae91b91bed43f4d6e0d644 | affected |
| Linux | Linux | aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < 0e4f43779d550e559be13a5cdb763bad92c4cc99 | affected |
| Linux | Linux | aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < e1c9866173c5f8521f2d0768547a01508cb9ff27 | affected |
| Linux | Linux | 6.8 | affected |
| Linux | Linux | 0 < 6.8 | unaffected |
| Linux | Linux | 6.12.80 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.21 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.11 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/e21da2ad8844585040fe4b82be1ad2fe99d40074
- https://git.kernel.org/stable/c/82656e8daf8de00935ae91b91bed43f4d6e0d644
- https://git.kernel.org/stable/c/0e4f43779d550e559be13a5cdb763bad92c4cc99
- https://git.kernel.org/stable/c/e1c9866173c5f8521f2d0768547a01508cb9ff27
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