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Vulnerability · Published Sep 1, 2026 · Assigned by redhat

CVE-2026-84269Gvfs: afp: heap-based buffer overflow in dsi read path

Medium 6.5

In plain English

A medium-severity heap buffer overflow in gvfs from GNOME. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 76.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12gvfsno fix listedDEBIAN-CVE-2026-84269
Debian:13gvfsno fix listedDEBIAN-CVE-2026-84269
Debian:14gvfs1.62.0-1DEBIAN-CVE-2026-84269
Ubuntu:22.04:LTSgvfs1.48.2-0ubuntu1.3UBUNTU-CVE-2026-84269
Ubuntu:24.04:LTSgvfs1.54.4-0ubuntu1~24.04.5UBUNTU-CVE-2026-84269
Ubuntu:26.04:LTSgvfs1.60.0-1ubuntu0.2UBUNTU-CVE-2026-84269

Affected products (as reported)

VendorProductVersions
GNOME gvfs 0 – before 1.60.2
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References