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

Status: published. Published: 2026-09-01. Updated: 2026-11-06.

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.

## Remediation

- workaround: To mitigate this vulnerability, do not connect to untrusted AFP servers. (source: CNA: redhat)

## Affected products and versions

- GNOME / gvfs (gvfs): ≥ 0; < 1.60.2 (affected, semver). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 10 (gvfs): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (gvfs): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (gvfs): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (gvfs): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (gvfs): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.30% as of 2026-11-05; percentile 23.11%

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-122

## Exploit evidence

- exploit: https://gitlab.gnome.org/GNOME/gvfs/-/issues/863 (ADP: CISA-ADP)

## References

- https://access.redhat.com/security/cve/CVE-2026-84269 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2526784 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://gitlab.gnome.org/GNOME/gvfs/-/issues/863 (CNA: redhat)

- https://gitlab.gnome.org/GNOME/gvfs/-/issues/863 (ADP: CISA-ADP; exploit)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-84269; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-84269; retrieved 2026-11-06; source updated Not reported

Revision: e84cf88d56e2785db7e93c8d153dc6f2c92f3aaab1889cf43ffa42cf54cbd58e

Canonical: https://y2.dev/cve/CVE-2026-84269

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