CVE-2026-71221

Gfs2-utils: gfs2-utils: stack out-of-bounds write via unchecked height in savemeta

CVE-2026-71221 is fixed in gfs2-utils on 1 platform by DEBIAN-CVE-2026-71221 (version 3.6.1-2), released September 3, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.0

Important

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0013

2nd percentile

A stack out-of-bounds write vulnerability was found in gfs2-utils. In savemeta, the height value from on-disk inode metadata is used as a loop bound without bounds checking, causing a stack buffer overflow that may lead to arbitrary code execution when processing crafted GFS2 filesystem images.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
gfs2-utils · Debian 14	3.6.1-2	DEBIAN-CVE-2026-71221	Sep 3, 2026

Details

Published
September 3, 2026
Weakness
Out-of-bounds Write
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71221

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