CVE-2026-23424: accel/amdxdna: Validate command buffer payload count

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-03 · updated 2026-07-24

Description

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Validate command buffer payload count The count field in the command header is used to determine the valid payload size. Verify that the valid payload does not exceed the remaining buffer space.

Affected products

Linux kernel: from 6.14.1 before 6.18.17; from 6.19 before 6.19.7; 6.14, 7.0-rc1, 7.0-rc2, 7.0-rc3, 7.0-rc4, 7.0-rc5 (+2) — fixed in 6.18.17, 6.19.7

How to fix

Upgrade to a fixed version: Linux kernel 6.18.17, 6.19.7. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/3464e751755172ddbb849c1bd92f5f59e95c59a1
https://git.kernel.org/stable/c/3ed2ae6b3fe869f99b75afd02045ba5c0c0773e2
https://git.kernel.org/stable/c/901ec3470994006bc8dd02399e16b675566c3416

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