Unrated severityNVD Advisory· Published Sep 4, 2026
CVE-2026-80831
CVE-2026-80831
Description
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.
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Affected products
1Patches
Vulnerability mechanics
References
9- git.kernel.org/stable/c/04201dcc88b26eac52f736e39727fc5c420b7257nvd
- git.kernel.org/stable/c/0e9edb108a63bbbef952dfcbc597e34ed9c1fb74nvd
- git.kernel.org/stable/c/1537bd55b4f842565068c54b47cd2ae1777d5f8fnvd
- git.kernel.org/stable/c/182f16a20d329a1c818d51dad57d9bf43d356c7cnvd
- git.kernel.org/stable/c/6ef9a4afb52cb102ab038cd42352c142d8505d09nvd
- git.kernel.org/stable/c/c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8nvd
- git.kernel.org/stable/c/da14fae5203b72ca71ccfa9af8de9249e40d533anvd
- git.kernel.org/stable/c/e72a795df521cb65b7c4705cc11078cdacfaa2f4nvd
- git.kernel.org/stable/c/fd0f211b27a6ec2ebd8c315683401b43adcc5511nvd
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