CVE-2026-71224

MEDIUM 4.7

Gfs2-utils: gfs2-utils: stack overflow via alloca(i_height) in metadata walk

CVSS Score

4.7

EPSS Score

0.0%

EPSS Percentile

0th

A stack overflow vulnerability was found in gfs2-utils. The metadata walk code in metawalk.c uses alloca() with an untrusted inode height value from on-disk metadata without bounds validation, causing stack exhaustion and a denial of service when processing crafted GFS2 filesystem images.

CWE	CWE-770
Vendor	red hat
Product	red hat enterprise linux 7
Published	Sep 3, 2026
Last Updated	Sep 3, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

Red Hat / Red Hat Enterprise Linux 7

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-71224 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2511397

Credits

Red Hat would like to thank Tristan Madani (Talence Security) for reporting this issue.