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Fencer Vulns
high 7.5

CVE-2023-26253 json

In Gluster GlusterFS 11.0, there is an xlators/mount/fuse/src/fuse-bridge.c notify stack-based buffer over-read.

published 2023-02-21 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-30077

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

In Gluster GlusterFS 11.0, there is an xlators/mount/fuse/src/fuse-bridge.c notify stack-based buffer over-read.

Patch / fix

  • glusterfs Debian 14, Debian 13, Debian 12 10.3-5

debian advisories DEBIAN-CVE-2023-26253

  • glusterfs Ubuntu 22.04 LTS 10.1-1ubuntu0.1
  • glusterfs Ubuntu Pro 16.04 LTS 3.7.6-1ubuntu1+esm2

ubuntu advisories UBUNTU-CVE-2023-26253

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • glusterfs Azure Linux 3.0 11.1-3

azure linux advisories AZL-38152

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-26253 updated cvss 7.5

glusterfs: stack-based buffer overflow in notify() in fuse-bridge.c

  • Red Hat Enterprise Linux 6 glusterfs, glusterfs-api, glusterfs-cli, glusterfs-fuse, glusterfs-libs, glusterfs-rdma, +2 more Red Hat Enterprise Linux 7 glusterfs, glusterfs-api, glusterfs-cli, glusterfs-fuse, glusterfs-libs, glusterfs-rdma, +2 more Red Hat Enterprise Linux 8 glusterfs, glusterfs-api, glusterfs-cli, glusterfs-fuse, glusterfs-libs, glusterfs-rdma, +2 more Red Hat Enterprise Linux 9 glusterfs, glusterfs-api, glusterfs-cli, glusterfs-fuse, glusterfs-libs, glusterfs-rdma, +3 more Red Hat Storage 3 glusterfs, glusterfs-api, glusterfs-cli, glusterfs-fuse, glusterfs-libs, glusterfs-rdma, +8 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/gluster/glusterfs/issues/3954 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.