RHSA-2026:69655 - Security Advisory

Topic

An update for libxml2 is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

Description

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

Security Fix(es):

• libxml2: mingw-libxml2: libxml2: Denial of Service via crafted XML input due to use-after-free (CVE-2026-6653)

Bug Fix(es) and Enhancement(s):

• libxml2: CVE-2025-9714 fix (RHEL-119279) backported wrong upstream commit ? dyn:map recursion still crashes (JIRA:RHEL-249282)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 8.10 aarch64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 8.10 ppc64le
• Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 8.10 s390x

Fixes

• BZ - 2491354 - CVE-2026-6653 libxml2: mingw-libxml2: libxml2: Denial of Service via crafted XML input due to use-after-free
• RHEL-249282 - libxml2: CVE-2025-9714 fix (RHEL-119279) backported wrong upstream commit ? dyn:map recursion still crashes

CVEs

• CVE-2026-6653

References

• https://access.redhat.com/security/updates/classification/#moderate