CVE-2026-71219

Gfs2-utils: gfs2-utils: stack overflow via alloca(1<<di_depth) in hash table traversal

CVE-2026-71219 is fixed in gfs2-utils on 1 platform by DEBIAN-CVE-2026-71219 (version 3.6.1-2), released September 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

4.7

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0012

1st percentile

A stack overflow vulnerability was found in gfs2-utils. The hash table traversal code in metawalk.c uses alloca() with an exponentially-derived size from the untrusted on-disk di_depth field without bounds validation. A crafted GFS2 filesystem image with a large di_depth value causes stack exhaustion and a denial of service when processed by fsck.gfs2, gfs2_edit, or savemeta.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
gfs2-utils · Debian 14	3.6.1-2	DEBIAN-CVE-2026-71219	Sep 3, 2026

Details

Published
September 3, 2026
Weakness
Allocation of Resources Without Limits or Throttling
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71219

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