CVE-2026-71219Gfs2-utils: gfs2-utils: stack overflow via alloca(1<<di_depth) in hash table traversal
Updated under an hour ago ()
Does this affect you?
It affects Red Hat Enterprise Linux 7. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.7 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Analyzed
- Record last updated
- Sep 4, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat Enterprise Linux 7 redhat:enterprise_linux | 7 | CNA record |
redhat enterprise_linux redhat:enterprise_linux | 7.0; 8.0; 9.0 | NVD |
References
- https://access.redhat.com/security/cve/CVE-2026-71219vdb-entry, x-refsource-redhat, vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2507750issue-tracking, x-refsource-redhat, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.