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CVE-2026-80831

crypto: mxs-dcp - fix source scatterlist length access PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before fd0f211b27a6ec2ebd8c315683401b43adcc5511; affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before 04201dcc88b26eac52f736e39727fc5c420b7257; affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before e72a795df521cb65b7c4705cc11078cdacfaa2f4; affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before 1537bd55b4f842565068c54b47cd2ae1777d5f8f; affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before da14fae5203b72ca71ccfa9af8de9249e40d533a; affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before 182f16a20d329a1c818d51dad57d9bf43d356c7c; affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before 0e9edb108a63bbbef952dfcbc597e34ed9c1fb74; affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before 6ef9a4afb52cb102ab038cd42352c142d8505d09; affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8
Linux / Linuxaffected 3.14; unaffected 0 before 3.14; unaffected 5.10.269 through 5.10.*; unaffected 5.15.220 through 5.15.*; unaffected 6.1.187 through 6.1.*; unaffected 6.6.156 through 6.6.*; unaffected 6.12.108 through 6.12.*; unaffected 6.18.49 through 6.18.*; unaffected 7.1.13 through 7.1.*; unaffected 7.2.3 through 7.2.*; unaffected 7.3 through *

CWE

No CWE identifiers supplied.

References