{"cve":"CVE-2026-80831","nvd":{"published":"2026-09-04T16:18:11.287","modified":"2026-10-19T09:17:18.260","status":"Received","description":"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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/04201dcc88b26eac52f736e39727fc5c420b7257","https://git.kernel.org/stable/c/0e9edb108a63bbbef952dfcbc597e34ed9c1fb74","https://git.kernel.org/stable/c/1537bd55b4f842565068c54b47cd2ae1777d5f8f","https://git.kernel.org/stable/c/182f16a20d329a1c818d51dad57d9bf43d356c7c","https://git.kernel.org/stable/c/6ef9a4afb52cb102ab038cd42352c142d8505d09"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:52:03.409947763+00:00"},"epss":{"cve":"CVE-2026-80831","score":0.00165,"percentile":0.05658,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}