CVE-2026-80831

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 < fd0f211b27a6ec2ebd8c315683401b43adcc5511affected
LinuxLinux15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 < 04201dcc88b26eac52f736e39727fc5c420b7257affected
LinuxLinux15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 < e72a795df521cb65b7c4705cc11078cdacfaa2f4affected
LinuxLinux15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 < 1537bd55b4f842565068c54b47cd2ae1777d5f8faffected
LinuxLinux15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 < da14fae5203b72ca71ccfa9af8de9249e40d533aaffected
LinuxLinux15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 < 182f16a20d329a1c818d51dad57d9bf43d356c7caffected
LinuxLinux15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 < 0e9edb108a63bbbef952dfcbc597e34ed9c1fb74affected
LinuxLinux15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 < 6ef9a4afb52cb102ab038cd42352c142d8505d09affected
LinuxLinux15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 < c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8affected
LinuxLinux3.14affected
LinuxLinux0 < 3.14unaffected
LinuxLinux5.10.269 <= 5.10.*unaffected
LinuxLinux5.15.220 <= 5.15.*unaffected
LinuxLinux6.1.187 <= 6.1.*unaffected
LinuxLinux6.6.156 <= 6.6.*unaffected
LinuxLinux6.12.108 <= 6.12.*unaffected
LinuxLinux6.18.49 <= 6.18.*unaffected
LinuxLinux7.1.13 <= 7.1.*unaffected
LinuxLinux7.2.3 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References