| Name | CVE-2026-6732 |
| Description | A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1134866 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libxml2 (PTS) | bullseye | 2.9.10+dfsg-6.7+deb11u4 | fixed |
| bullseye (security) | 2.9.10+dfsg-6.7+deb11u10 | fixed | |
| bookworm | 2.9.14+dfsg-1.3~deb12u5 | fixed | |
| bookworm (security) | 2.9.14+dfsg-1.3~deb12u4 | fixed | |
| trixie | 2.12.7+dfsg+really2.9.14-2.1+deb13u2 | fixed | |
| trixie (security) | 2.12.7+dfsg+really2.9.14-2.1+deb13u1 | fixed | |
| forky, sid | 2.15.3+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libxml2 | source | bullseye | (not affected) | |||
| libxml2 | source | bookworm | (not affected) | |||
| libxml2 | source | trixie | (not affected) | |||
| libxml2 | source | (unstable) | 2.15.3+dfsg-1 | 1134866 |
[trixie] - libxml2 <not-affected> (Vulnerable code not present)
[bookworm] - libxml2 <not-affected> (Vulnerable code not present)
[bullseye] - libxml2 <not-affected> (Vulnerable code not present)
https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097
https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/411
Fixed by: https://gitlab.gnome.org/GNOME/libxml2/-/commit/226b560837b90dea9b14431eca6e6fda8fb01ab4 (master)
Fixed by: https://gitlab.gnome.org/GNOME/libxml2/-/commit/7cea3fd1557437b88f2c7b5e1b71a2d5fb152b55 (master)
Introduced with: https://gitlab.gnome.org/GNOME/libxml2/-/commit/e1153832b0a31b872517ab582641630e2d14cec7 (v2.13.0)