Bug 2372379 (CVE-2025-49795)

Summary: CVE-2025-49795 libxml: Null pointer dereference leads to Denial of service (DoS)
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: csutherl, jclere, pjindal, plodge, szappis
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions. This flaw allows an attacker to craft a malicious XML input to libxml2, leading to a denial of service.
Story Points: ---
Clone Of: Environment:
Last Closed: 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: 2372380, 2372381, 2372382, 2372383, 2372384    
Bug Blocks:    

Description OSIDB Bzimport 2025-06-12 00:33:46 UTC
A null pointer dereference vulnerability was discovered in the libxml2. The issue occurs in the xmlSchematronFormatReport function when processing incorrect XPath expressions in Schematron schema reports, leading to undefined behavior and potential crashes.