What’s Vulnerable › Vulnerabilities

CVE-2025-39781: parisc: Drop WARN_ON_ONCE() from flush_cache_vmap

• 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: 2025-09-11 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: parisc: Drop WARN_ON_ONCE() from flush_cache_vmap I have observed warning to occassionally trigger.

Affected products

• Linux kernel: before 6.6.103; from 6.7 before 6.12.44; from 6.13 before 6.16.4 — fixed in 6.12.44, 6.16.4, 6.6.103

How to fix

Upgrade to a fixed version: Linux kernel 6.12.44, 6.16.4, 6.6.103. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/4afb1352b85d7deb777694fba16d13c30c08776f
• https://git.kernel.org/stable/c/4eab1c27ce1f0e89ab67b01bf1e4e4c75215708a
• https://git.kernel.org/stable/c/69cf90e5aa50fe3cb0c1a63cabc4761db44b0035
• https://git.kernel.org/stable/c/8f8a07ad04da5b3c90fab61c33d4a8256a680591

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