Bug 2526945 - CVE-2026-84269 gvfs: AFP: heap-based buffer overflow in DSI read path [fedora-all]
Summary: CVE-2026-84269 gvfs: AFP: heap-based buffer overflow in DSI read path [fedora...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: gvfs
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Adrian Vovk
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["169f2844-7b1a-437b-89c3-c...
Depends On:
Blocks: CVE-2026-84269
TreeView+ depends on / blocked
 
Reported: 2026-09-01 17:43 UTC by Guilherme de Almeida Suckevicz
Modified: 2026-09-03 00:59 UTC (History)
3 users (show)

Fixed In Version: gvfs-1.58.4-4.fc43
Clone Of:
Environment:
Last Closed: 2026-09-03 00:59:11 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
GNOME Gitlab GNOME gvfs issues 863 0 None closed (CVE-2026-84269) gvfs AFP backend: unclamped heap buffer overflow in DSI read path (DoS) 2026-09-01 22:43:33 UTC

Description Guilherme de Almeida Suckevicz 2026-09-01 17:43:52 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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. This vulnerability affects all gvfs versions and is fixed in version 1.60.2.

Comment 1 Adrian Vovk 2026-09-01 22:43:34 UTC
This CVE is already fixed in f44 (1.60.2), f45 (1.61.91), and rawhide (1.61.91)

Fix will need to be backported to f43

Comment 2 Fedora Update System 2026-09-01 23:32:15 UTC
FEDORA-2026-571b7e1505 (gvfs-1.58.4-4.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-571b7e1505

Comment 3 Fedora Update System 2026-09-02 02:04:02 UTC
FEDORA-2026-571b7e1505 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-571b7e1505`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-571b7e1505

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-09-03 00:59:11 UTC
FEDORA-2026-571b7e1505 (gvfs-1.58.4-4.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.


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