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CVE-2025-71109: MIPS: ftrace: Fix memory corruption when kernel is located beyond 32 bits

highCVSS 7.8CVE-2025-71109

CSIRTS triage

What
MIPS ftrace initialization causes memory corruption when the kernel is loaded at addresses beyond 32-bit range.
Who is affected
MIPS-based systems running affected Linux kernel versions with ftrace enabled and kernel address space above 4GB.
Urgency
High severity (CVSS 7.8); memory corruption can lead to system instability.
Action
Apply kernel patch fixing MIPS ftrace address handling for 64-bit kernel locations.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.8
Published
2026-08-06
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-71109

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2025-71109coverage & exploitation statusNVD · CVE.org

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