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Fencer Vulns
medium 6.5

CVE-2026-84269 json

Gvfs: afp: heap-based buffer overflow in dsi read path

published 2026-09-01 2 mo ago modified 2026-11-06 3 d ago also EUVD-2026-69297

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

A flaw was found in the AFP backend in gvfs. When mounting a share, a malicious AFP server can cause the DSI read path to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the pre-sized reply buffer, causing the operation to access past the intended boundaries. This issue allows a malicious server to overflow a heap buffer and crash the gvfsd-afp process, resulting in a denial of service.

Patch / fix

  • GNOME gvfs 1.60.2
  • gvfs Debian 14 1.62.0-1

debian advisories DEBIAN-CVE-2026-84269

  • gvfs Ubuntu 22.04 LTS 1.48.2-0ubuntu1.3
  • gvfs Ubuntu 24.04 LTS 1.54.4-0ubuntu1~24.04.5
  • gvfs Ubuntu 26.04 LTS 1.60.0-1ubuntu0.2

ubuntu advisories UBUNTU-CVE-2026-84269

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

  • gvfs SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Desktop Applications 15 SP7 1.52.2-150600.3.9.1
  • gvfs SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 1.48.2-150400.4.15.1
  • gvfs SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 1.28.3-18.12.1

suse advisories SUSE-SU-2026:4240-1SUSE-SU-2026:4238-1SUSE-SU-2026:4200-1

  • gvfs openSUSE Leap 16.0 1.59.90-160000.3.1
  • gvfs openSUSE Tumbleweed 1.60.3-1.1

opensuse advisories openSUSE-SU-2026:21875-1openSUSE-SU-2026:11788-1

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-2026-84269 updated cvss 6.5

gvfs: AFP: heap-based buffer overflow in DSI read path

  • Red Hat Enterprise Linux 6 gvfs-afc, gvfs-smb, gvfs-fuse, gvfs-archive, gvfs-gphoto2, gvfs-obexftp, +1 more
    affected: workaround, no fix planned “To mitigate this vulnerability, do not connect to untrusted AFP servers.”
  • Red Hat Enterprise Linux 7 gvfs, gvfs-afc, gvfs-afp, gvfs-goa, gvfs-mtp, gvfs-smb, +6 more Red Hat Enterprise Linux 8 gvfs, gvfs-afc, gvfs-afp, gvfs-goa, gvfs-mtp, gvfs-smb, +5 more Red Hat Enterprise Linux 9 gvfs, gvfs-goa, gvfs-mtp, gvfs-smb, gvfs-fuse, gvfs-client, +2 more Red Hat Enterprise Linux 10 gvfs 1.54.4-5.el10
    affected: workaround, no fix available “To mitigate this vulnerability, do not connect to untrusted AFP servers.”

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
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.gnome.org https://gitlab.gnome.org/GNOME/gvfs/-/issues/863 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • GNOME gvfs
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow

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.