ALSA-2026:71586

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

Security Fix(es):

• libxml2: libxml2: Arbitrary code execution via heap-based buffer overflow (CVE-2026-86138)
• libxml2: libxml2: Data integrity issues due to integer overflow in write callbacks (CVE-2026-86143)
• libxml2: libxml2: Arbitrary code execution via stack-based buffer overflow in xmlSnprintfElements (CVE-2026-86140)
• libxml2: libxml2: Heap-based buffer overflow in xmlXPtrEval due to xpointer length saturation (CVE-2026-86142)
• libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. (CVE-2026-86144)
• libxml2: double-free/UAF in libxml2 Python bindings (CVE-2026-74860)

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.