Stack Overflow Vulnerability in GFS2 Utilities by Red Hat
CVE-2026-71224

4.7MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Vendor
CVE Published:
3 September 2026

What is CVE-2026-71224?

A vulnerability exists in the gfs2-utils package, where the code in metawalk.c incorrectly utilizes alloca() with an unvalidated inode height value derived from on-disk metadata. This flaw can lead to stack exhaustion, resulting in denial of service when processing specially crafted GFS2 filesystem images.

References

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

CVSS V3.1

Score:
4.7
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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