Bug 2413338

Summary: CVE-2025-12863 libxml2: Namespace Use-After-Free in xmlSetTreeDoc() function of libxml2 [fedora-42]
Product: [Fedora] Fedora Reporter: Abhishek Raj <abhraj>
Component: libxml2Assignee: David King <amigadave>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: 42CC: amigadave, mfindra
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["bbca27f6-5a9a-47a2-a1e0-7fe60a83a8d6"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2025-11-20 07:20:40 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: 2413323    

Description Abhishek Raj 2025-11-07 11:11:32 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.

The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams
Comment 1 Michal Findra 2025-11-20 07:20:40 UTC 
not a bug, documented behaviour: https://gitlab.gnome.org/GNOME/libxml2/-/issues/1012#note_2608283