CVE-2026-80831

CVE-2026-80831

published September 4, 2026

CVSS
—
EPSS
0%
Percentile
5.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00165 · 5.4th percentile
Published
2026-09-04T20:18Z
References (9)
https://git.kernel.org/stable/c/04201dcc88b26eac52f736e39727fc5c420b7257 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0e9edb108a63bbbef952dfcbc597e34ed9c1fb74 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1537bd55b4f842565068c54b47cd2ae1777d5f8f · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/182f16a20d329a1c818d51dad57d9bf43d356c7c · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ef9a4afb52cb102ab038cd42352c142d8505d09 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/da14fae5203b72ca71ccfa9af8de9249e40d533a · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e72a795df521cb65b7c4705cc11078cdacfaa2f4 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd0f211b27a6ec2ebd8c315683401b43adcc5511 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 06 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 04 SEP 15:54Z
    crypto: mxs-dcp - fix source scatterlist length access
    cvelistv5