CVE-2026-80831crypto: mxs-dcp - fix source scatterlist length access
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: crypto: mxs-dcp - fix source scatterlist length access mxs_dcp_aes_block_crypt() uses sg_dma_len() without mapping the source scatterlist with dma_map_sg() first. Therefore, sg_dma_len() is invalid and could return zero or a stale DMA length, causing encryption and decryption to process the wrong number of bytes when CONFIG_NEED_SG_DMA_LENGTH=y. Use the original scatterlist length instead.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 4, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before fd0f211b27a6ec2ebd8c315683401b43adcc5511; from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before 04201dcc88b26eac52f736e39727fc5c420b7257; from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before e72a795df521cb65b7c4705cc11078cdacfaa2f4; from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before 1537bd55b4f842565068c54b47cd2ae1777d5f8f; from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before da14fae5203b72ca71ccfa9af8de9249e40d533a; from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before 182f16a20d329a1c818d51dad57d9bf43d356c7c; 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 builds before 0e9edb108a63bbbef952dfcbc597e34ed9c1fb74; 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 builds before 6ef9a4afb52cb102ab038cd42352c142d8505d09; and 1 more ranges | CNA record |
References
- https://git.kernel.org/stable/c/fd0f211b27a6ec2ebd8c315683401b43adcc5511
- https://git.kernel.org/stable/c/04201dcc88b26eac52f736e39727fc5c420b7257
- https://git.kernel.org/stable/c/e72a795df521cb65b7c4705cc11078cdacfaa2f4
- https://git.kernel.org/stable/c/1537bd55b4f842565068c54b47cd2ae1777d5f8f
- https://git.kernel.org/stable/c/da14fae5203b72ca71ccfa9af8de9249e40d533a
- https://git.kernel.org/stable/c/182f16a20d329a1c818d51dad57d9bf43d356c7c
- https://git.kernel.org/stable/c/0e9edb108a63bbbef952dfcbc597e34ed9c1fb74
- https://git.kernel.org/stable/c/6ef9a4afb52cb102ab038cd42352c142d8505d09
- https://git.kernel.org/stable/c/c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.