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CVE-2025-71161: dm-verity: disable recursive forward error correction

mediumCVSS 5.5CVE-2025-71161

CSIRTS triage

What
dm-verity recursive forward error correction is disabled due to a vulnerability.
Who is affected
Systems using dm-verity with recursive forward error correction enabled are affected.
Urgency
Medium severity; this affects data integrity verification in the device mapper.
Action
Apply Linux kernel patch CVE-2025-71161 to disable or properly handle recursive FEC in dm-verity.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
medium — CVSS 5.5
Published
2026-08-06
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-71161

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-2025-71161coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for dm-verity

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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