An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7. Formatting error messages with xmllint --htmlout can result in a buffer over-read in xmlHTMLPrintFileContext in xmllint.c.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-34459
• https://gitlab.gnome.org/GNOME/libxml2/-/issues/720
• https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.11.8
• https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.12.7
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5HVUXKYTBWT3G5DEEQX62STJQBY367NL
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/INKSSLW5VMZIXHRPZBAW4TJUX5SQKARG
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VRDJCNQP32LV56KESUQ5SNZKAJWSZZRI