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CVE-2026-13595: Util-linux: util-linux: heap use-after-free in libblkid nested partition probing

mediumCVSS 6.8CVE-2026-13595

CSIRTS triage

vendor: Util-linuxproduct: Util-linuxOther
What
There is a heap use-after-free vulnerability in libblkid during nested partition probing.
Who is affected
Deployments using affected versions of Util-linux.
Urgency
Remediation is medium urgency due to the medium severity of the issue.
Action
Update to a fixed version for CVE-2026-13595.

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 6.8
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-13595

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-2026-13595coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

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