MEDIUM 4.7 Microsoft

CVE-2026-27456

util-linux: TOCTOU Race Condition in util-linux mount(8) - Loop Device Setup

Microsoft Security Update 2026-Apr: util-linux: TOCTOU Race Condition in util-linux mount(8) - Loop Device Setup

Affected Products

azl3 util-linux 2.40.2-3 on Azure Linux 3.0
cbl2 util-linux 2.37.4-10 on CBL Mariner 2.0
azl3 util-linux 2.40.2-4 on Azure Linux 3.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27456
https://nvd.nist.gov/vuln/detail/CVE-2026-27456

Published: 2026-04-14 · Source: Microsoft · Feed updated: 2026-08-04

This medium severity vulnerability with a CVSS score of 4.7 was published on 2026-04-14 via Microsoft. Affected: azl3 util-linux 2.40.2-3 on Azure Linux 3.0, cbl2 util-linux 2.37.4-10 on CBL Mariner 2.0, azl3 util-linux 2.40.2-4 on Azure Linux 3.0.

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