{"id":"CVE-2026-80831","summary":"crypto: mxs-dcp - fix source scatterlist length access","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: mxs-dcp - fix source scatterlist length access\n\nmxs_dcp_aes_block_crypt() uses sg_dma_len() without mapping the source\nscatterlist with dma_map_sg() first. Therefore, sg_dma_len() is invalid\nand could return zero or a stale DMA length, causing encryption and\ndecryption to process the wrong number of bytes when\nCONFIG_NEED_SG_DMA_LENGTH=y.\n\nUse the original scatterlist length instead.","modified":"2026-09-06T03:46:51.930534542Z","published":"2026-09-04T15:54:36.250Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80831.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/04201dcc88b26eac52f736e39727fc5c420b7257"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0e9edb108a63bbbef952dfcbc597e34ed9c1fb74"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1537bd55b4f842565068c54b47cd2ae1777d5f8f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/182f16a20d329a1c818d51dad57d9bf43d356c7c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6ef9a4afb52cb102ab038cd42352c142d8505d09"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/da14fae5203b72ca71ccfa9af8de9249e40d533a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e72a795df521cb65b7c4705cc11078cdacfaa2f4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fd0f211b27a6ec2ebd8c315683401b43adcc5511"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80831.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80831"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5"},{"fixed":"fd0f211b27a6ec2ebd8c315683401b43adcc5511"},{"fixed":"04201dcc88b26eac52f736e39727fc5c420b7257"},{"fixed":"e72a795df521cb65b7c4705cc11078cdacfaa2f4"},{"fixed":"1537bd55b4f842565068c54b47cd2ae1777d5f8f"},{"fixed":"da14fae5203b72ca71ccfa9af8de9249e40d533a"},{"fixed":"182f16a20d329a1c818d51dad57d9bf43d356c7c"},{"fixed":"0e9edb108a63bbbef952dfcbc597e34ed9c1fb74"},{"fixed":"6ef9a4afb52cb102ab038cd42352c142d8505d09"},{"fixed":"c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80831.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.14.0"},{"fixed":"5.10.269"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.220"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.187"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.156"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.108"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.49"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.13"}]},{"type":"ECOSYSTEM","events":[{"introduced":"7.2.0"},{"fixed":"7.2.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80831.json"}}],"schema_version":"1.9.0"}