CVE-2026-80831: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

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 products

• Linux Linux: from 3.14, before 5.10.269 (fixed in 5.10.269); from 5.11, before 5.15.220 (fixed in 5.15.220); from 5.16, before 6.1.187 (fixed in 6.1.187); from 6.2, before 6.6.156 (fixed in 6.6.156); from 6.7, before 6.12.108 (fixed in 6.12.108); from 6.13, before 6.18.49 (fixed in 6.18.49); …

Published 2026-09-04. Last modified 2026-09-04.