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VulnerabilityPublished Updated

CVE-2026-71219: gfs2-utils · Stack Overflow Vulnerability Was Found

Affects gfs2-utilsSource GCVE Database

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Authoritative record:CVE-2026-71219· Medium 4.7

Not known to be exploited · CVSS 4.7 Medium.

Data as of 8 Nov 2026, 23:24 UTC

CVSS 3.1 base score
4.7Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.14.7
EPSS
0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10gfs2-utilspkg:deb/ubuntu/gfs2-utils?arch=source&distro=stonkingOther threatsAffected
  • =3.6.1-1build1
  • =3.6.1-2ubuntu1
Fixed in–
Ubuntu 26.04 LTSgfs2-utilspkg:deb/ubuntu/gfs2-utils?arch=source&distro=resoluteOther threatsAffected
  • =3.6.1-1
  • =3.6.1-1build1
Fixed in–
Ubuntu 24.04 LTSgfs2-utilspkg:deb/ubuntu/gfs2-utils?arch=source&distro=nobleOther threatsAffected
  • =3.5.1-1
Fixed in–
Ubuntu 22.04 LTSgfs2-utilspkg:deb/ubuntu/gfs2-utils?arch=source&distro=jammyOther threatsAffected
  • =3.3.0-2
  • =3.4.1-2
Fixed in–
Ubuntu 20.04 LTSgfs2-utilspkg:deb/ubuntu/gfs2-utils?arch=source&distro=focalOther threatsAffected
  • =3.2.0-2
  • =3.2.0-3
Fixed in–
Ubuntu 18.04 LTSgfs2-utilspkg:deb/ubuntu/gfs2-utils?arch=source&distro=bionicOther threatsAffected
  • =3.1.9-2ubuntu1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Meanwhile, mitigate by running fsck.gfs2, gfs2_edit, and savemeta in isolated environments and disabling automatic filesystem checks at boot to prevent automatic triggering of the vulnerable code.

Description

A stack overflow vulnerability in gfs2-utils allows local users to cause denial of service by triggering stack exhaustion via crafted GFS2 filesystem images. The issue arises from unbounded use of alloca() based on the di_depth field in untrusted images, affecting tools like fsck.gfs2, gfs2_edit, and savemeta. This vulnerability requires local access and user interaction and does not impact the kernel GFS2 driver. Mitigations include running affected tools in isolated environments and disabling automatic filesystem checks at boot until patched.

References

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