CVE-2026-53612

unknown

Published 2026-08-31 · Modified —

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

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Description

util-linux vulnerabilities

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Debian Security Tracker · View original ↗ · DFSG

CVE-2026-53612 NameCVE-2026-53612 DescriptionLocal Privilege Escalation via TOCTOU in mount(8) hook_owner.c chmod/chown SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) Debian Bugs1140194 Vulnerable and fixed packages The table below lists information on source packages. Source…

CVE-2026-53612

Name	CVE-2026-53612
Description	Local Privilege Escalation via TOCTOU in mount(8) hook_owner.c chmod/chown
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1140194

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
util-linux (PTS)	bullseye (security), bullseye	2.36.1-8+deb11u2	fixed
	bookworm	2.38.1-5+deb12u3	fixed
	bookworm (security)	2.38.1-5+deb12u1	fixed
	trixie	2.41-5	vulnerable
	forky	2.42.1-3	vulnerable
	sid	2.42.1-6	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Debian Bugs
util-linux	source	bullseye	(not affected)
util-linux	source	bookworm	(not affected)
util-linux	source	(unstable)	(unfixed)	1140194

Notes

[bookworm] - util-linux <not-affected> (Vulnerable code introduced later)
[bullseye] - util-linux <not-affected> (Vulnerable code introduced later)
https://github.com/util-linux/util-linux/security/advisories/GHSA-g8wm-75wr-g2vh
Fixed by: https://github.com/util-linux/util-linux/commit/d0c5adaeb3a3d823aba1377794de8f009b8152cc (v2.42.2)

Home - Debian Security - Source (Git)

Apply commands

text fix

Notes

[bookworm] - util-linux <not-affected> (Vulnerable code introduced later)[bullseye] - util-linux <not-affected> (Vulnerable code introduced later)https://github.com/util-linux/util-linux/security/advisories/GHSA-g8wm-75wr-g2vhFixed by: https://github.com/util-linux/util-linux/commit/d0c5adaeb3a3d823aba1377794de8f009b8152cc (v2.42.2)

OS impact

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`2.41.5-0+deb13u1`
sid	Fixed	`2.42.2-1`
forky	Fixed	`2.42.2-1`
bullseye	Fixed	`0`
bookworm	Fixed	`0`

Ubuntu Fixed 3 releases

Version	Status	Fixed in
resolute	Fixed	`2.41.3-3ubuntu2.2`
noble	Fixed	`2.39.3-9ubuntu6.6`
jammy	Fixed	`2.37.2-4ubuntu3.6`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.