CVE-2025-49794
CVE-2025-49794: 1 tracked advisory record across Red Hat. Compare source-reported impact, fixes and remediation.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityCritical9.1
Critical [CVE-2025-49794] heap use after free (uaf) leads to denial of service (dos)
CVE-2025-49794Source published Source updated
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 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. This issue was rated with a severity impact of Important by Red Hat Product Security, as libxml can be used to parse XML coming from the network depending on how the program consumes it and uses the library. Additionally, although the initial report shows a crash due to invalid memory access (A:H), other undefined issues that can present data integrity due to the application overwriting sensitive data are not discarded (I:H). Weakness…
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7 Extended Lifecycle Support
- Red Hat Enterprise Linux 8.2 Advanced Update Support
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
26 more entries in the full advisory.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- libxml2-0:2.12.5-7.el10_0
- libxml2-0:2.9.1-6.el7_9.10
- libxml2-0:2.9.7-21.el8_10.1
- libxml2-0:2.9.7-9.el8_2.3
46 more entries in the full advisory.
- Mitigation guidance
- There's no available mitigation other than avoid processing untrusted XML documents before updating to the libxml version containing the fix.
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