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.
Affected products
redhat: enterprise linux
References2
- access.redhat.com/security/cve/CVE-2026-71219 Vendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2507750 Issue TrackingVendor Advisory
Metrics
- CVSS 3.1
-
4.7
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 3 November 2026
- CWE
- CWE-770
Could this be exploited in your environment?
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