Bug 2451645

Summary: CVE-2026-34085 fontconfig: Fontconfig: Security flaw allows arbitrary code execution or system crash [fedora-all]
Product: [Fedora] Fedora Reporter: TEJ RATHI <trathi>
Component: fontconfigAssignee: Akira TAGOH <tagoh>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: ajax, fonts-bugs, i18n-bugs, mclasen, rstrode, tagoh
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["65df9a0b-8d8a-40c1-a4e1-f6ae7b5cc3e9"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-04-07 09:30:50 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2451414    

Description TEJ RATHI 2026-03-26 09:35:19 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.

Comment 1 Akira TAGOH 2026-04-07 09:30:50 UTC
The fixed patch has already been backported in 2.17.0-2 (https://src.fedoraproject.org/rpms/fontconfig/c/8bca22ae6843289d280f9d03098bcede86764255?branch=rawhide) and we currently have:

2.16.0-2.fc42 in f42 (not targeted)
2.17.0-3.fc43 in f43 (fixed)
2.17.0-4.fc44 in f44 (fixed)
2.17.0.4.fc44 in rawhide (fixed)