Red Hat alert RHSA-2025:11580-01 (libxml2)

An update for libxml2 is now available for Red Hat Enterprise Linux 9.4
Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of
Important. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

The libxml2 library is a development toolbox providing the implementation of
various XML standards.

Security Fix(es):

* libxml: Heap use after free (UAF) leads to Denial of service (DoS)
(CVE-2025-49794)

* libxml: Type confusion leads to Denial of service (DoS) (CVE-2025-49796)

* libxml2: Integer Overflow in xmlBuildQName() Leads to Stack Buffer Overflow
in libxml2 (CVE-2025-6021)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

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Original: https://access.redhat.com/security/data/csaf/v2/advisories/2025/rhsa-2025_11580.json