vulnerability
Red Hat: CVE-2025-49794: libxml: Heap use after free (UAF) leads to Denial of service (DoS) (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:L/Au:N/C:N/I:C/A:C) | Jun 16, 2025 | Jul 9, 2025 | Jan 28, 2026 |
Severity
9
CVSS
(AV:N/AC:L/Au:N/C:N/I:C/A:C)
Published
Jun 16, 2025
Added
Jul 9, 2025
Modified
Jan 28, 2026
Description
A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the <sch:name path="..."/> schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.
Solutions
no-fix-redhat-rpm-packageredhat-upgrade-libxml2redhat-upgrade-libxml2-debuginforedhat-upgrade-libxml2-debugsourceredhat-upgrade-libxml2-develredhat-upgrade-python3-libxml2redhat-upgrade-python3-libxml2-debuginfo
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