vulnerability
Arch Linux: Denial of service (CVE-2025-49794)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:L/Au:N/C:N/I:C/A:C) | Jun 16, 2025 | Jul 11, 2025 | Jan 23, 2026 |
Severity
9
CVSS
(AV:N/AC:L/Au:N/C:N/I:C/A:C)
Published
Jun 16, 2025
Added
Jul 11, 2025
Modified
Jan 23, 2026
Description
A Heap Use After Free (UAF) vulnerability was discovered in the Schematron in the libxml2. The issue arises in the xmlSchematronGetNode function when processing XPath expressions in Schematron schema elements <sch:name path="..."/>, where a pointer to freed memory is returned and then accessed, leading to undefined behavior and potential crashes.
The xmlSchematronGetNode function extracts a pointer to a node from an XPath node set and then immediately frees the entire XPath object containing that node set, rendering the returned pointer invalid.
The xmlSchematronGetNode function extracts a pointer to a node from an XPath node set and then immediately frees the entire XPath object containing that node set, rendering the returned pointer invalid.
Solution
arch-linux-upgrade-latest
References
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