Description
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.
Metrics
CVSS 3.1 4.7/10
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
No affected versions have been published.
Timeline
- Published
- Sep 3, 2026
- Last modified
- Sep 22, 2026
- NVD status
- Analyzed