CVE-2026-89085

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Published 2026-10-16 · Modified 2026-10-16

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CVSS v3

6.6

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

6.6

Description

A flaw was found in parted. A heap-based buffer overflow can occur when processing a specially crafted FAT32 filesystem due to an integer calculation error during buffer allocation. A local attacker could exploit this by enticing a user or automated service to open a malicious filesystem image, resulting in an application crash leading to a Denial of Service (DoS) or potential memory corruption.

Predictions

Exploit likelihood

65%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Debian Security Tracker · View original ↗ · DFSG

CVE-2026-89085 NameCVE-2026-89085 Descriptionheap buffer overflow in _init_fats / fat_table_read 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) Vulnerable and fixed packages The table below lists information on source packages. Source PackageReleaseVersionStatus parted…

CVE-2026-89085

Name	CVE-2026-89085
Description	heap buffer overflow in _init_fats / fat_table_read
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
parted (PTS)	bookworm	3.5-3	vulnerable
	trixie	3.6-5	vulnerable
	forky, sid	3.7-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
parted	source	(unstable)	(unfixed)

Notes

[trixie] - parted <no-dsa> (Minor issue)
https://alioth-lists.debian.net/pipermail/parted-devel/2026-September/006032.html
Fixed by: https://gitweb.git.savannah.gnu.org/gitweb/?p=parted.git;a=commit;h=73301c6915781c2eee66d0b1cc9d41a70bf901d6 (v3.7.13)

Home - Debian Security - Source (Git)

Apply commands

text fix

Notes

[trixie] - parted <no-dsa> (Minor issue)https://alioth-lists.debian.net/pipermail/parted-devel/2026-September/006032.htmlFixed by: https://gitweb.git.savannah.gnu.org/gitweb/?p=parted.git;a=commit;h=73301c6915781c2eee66d0b1cc9d41a70bf901d6 (v3.7.13)

OS impact

Debian Mixed 4 releases

Version	Package	Status	Fixed in
trixie	`parted`	Affected	—
sid	`parted`	Fixed	`3.8-2`
forky	`parted`	Fixed	`3.8-2`
bookworm	`parted`	Affected	—

References

CWEs

CWE-787

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

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