CVE-2025-49795

NameCVE-2025-49795
DescriptionA NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions. This flaw allows an attacker to craft a malicious XML input to libxml2, leading to a denial of service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libxml2 (PTS)bullseye2.9.10+dfsg-6.7+deb11u4fixed
bullseye (security)2.9.10+dfsg-6.7+deb11u7fixed
bookworm2.9.14+dfsg-1.3~deb12u1fixed
bookworm (security)2.9.14+dfsg-1.3~deb12u2fixed
trixie, sid2.12.7+dfsg+really2.9.14-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libxml2source(unstable)(not affected)

Notes

- libxml2 <not-affected> (Vulnerable code introduced later in 2.10.0; bug #1107753)
https://gitlab.gnome.org/GNOME/libxml2/-/issues/932
Introduced by: https://gitlab.gnome.org/GNOME/libxml2/-/commit/2cc93f77543b5721257f795f303bfb56a4b384c7 (v2.10.0)
Fixed by: https://gitlab.gnome.org/GNOME/libxml2/-/commit/499bcb78ab389f60c2fd634ce410d4bb85c18765 (master)
Follow up: https://gitlab.gnome.org/GNOME/libxml2/-/commit/24d7e15914588cb45e7fb41cbe4fcf785e1a4861 (master)
Fixed by: https://gitlab.gnome.org/GNOME/libxml2/-/commit/c24909ba2601848825b49a60f988222da3019667 (2.14)

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