The AlmaLinux Security team has issued two updates: one for libxml2, rated as Moderate (CVE-2025-9714), and another for expat, rated as Important (CVE-2025-59375). The libxml2 update fixes an infinite recursion issue in the exsltDynMapFunction function of libexslt. The expat update addresses a vulnerability that allows attackers to trigger large dynamic memory allocations through parsing small XML documents.

ALSA-2025:22376: libxml2 security update (Moderate)
ALSA-2025:22175: expat security update (Important)

ALSA-2025:22376: libxml2 security update (Moderate)

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AlmaLinux: 9
Type: Security
Severity: Moderate
Release date: 2025-12-03

Summary:

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

Security Fix(es):

* libxslt: libxml2: Inifinite recursion at exsltDynMapFunction function in libexslt/dynamic.c (CVE-2025-9714)

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.

Full details, updated packages, references, and other related information: https://errata.almalinux.org/9/ALSA-2025-22376.html

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Kind regards,
AlmaLinux Team

ALSA-2025:22175: expat security update (Important)

Hi,

You are receiving an AlmaLinux Security update email because you subscribed to receive errata notifications from AlmaLinux.

AlmaLinux: 9
Type: Security
Severity: Important
Release date: 2025-12-03

Summary:

Expat is a C library for parsing XML documents.

Security Fix(es):

* expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing (CVE-2025-59375)

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.

Full details, updated packages, references, and other related information: https://errata.almalinux.org/9/ALSA-2025-22175.html

This message is automatically generated, please don’t reply. For further questions, please, contact us via the AlmaLinux community chat: https://chat.almalinux.org/.
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Kind regards,
AlmaLinux Team