CVE-2025-37751: x86/cpu: Avoid running off the end of an AMD erratum table

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-05-01 · updated 2026-07-30

Description

In the Linux kernel, the following vulnerability has been resolved: x86/cpu: Avoid running off the end of an AMD erratum table The NULL array terminator at the end of erratum_1386_microcode was removed during the switch from x86_cpu_desc to x86_cpu_id. This causes readers to run off the end of the array. Replace the NULL.

Affected products

Linux kernel: from 6.14 before 6.14.3; 6.15-rc1 — fixed in 6.14.3

How to fix

Upgrade to a fixed version: Linux kernel 6.14.3. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/1b518f73f1b6f59e083ec33dea22d9a1a275a970
https://git.kernel.org/stable/c/f0df00ebc57f803603f2a2e0df197e51f06fbe90

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