CVE-2022-29824

Name	CVE-2022-29824
Description	In libxml2 before 2.9.14, several buffer handling functions in buf.c (xmlBuf) and tree.c (xmlBuffer) don't check for integer overflows. This can result in out-of-bounds memory writes. Exploitation requires a victim to open a crafted, multi-gigabyte XML file. Other software using libxml2's buffer functions, for example libxslt through 1.1.35, is affected as well.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3012-1, DSA-5142-1, ELA-617-1
Debian Bugs	1010526

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libxml2 (PTS)	jessie, jessie (lts)	2.9.1+dfsg1-5+deb8u17	fixed
	stretch (security)	2.9.4+dfsg1-2.2+deb9u7	fixed
	stretch (lts), stretch	2.9.4+dfsg1-2.2+deb9u11	fixed
	buster, buster (lts)	2.9.4+dfsg1-7+deb10u9	fixed
	buster (security)	2.9.4+dfsg1-7+deb10u6	fixed
	bullseye	2.9.10+dfsg-6.7+deb11u4	fixed
	bullseye (security)	2.9.10+dfsg-6.7+deb11u5	fixed
	bookworm	2.9.14+dfsg-1.3~deb12u1	fixed
	sid, trixie	2.12.7+dfsg+really2.9.14-0.2	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
libxml2	source	jessie	2.9.1+dfsg1-5+deb8u13	ELA-617-1
libxml2	source	stretch	2.9.4+dfsg1-2.2+deb9u7	DLA-3012-1
libxml2	source	buster	2.9.4+dfsg1-7+deb10u4	DSA-5142-1
libxml2	source	bullseye	2.9.10+dfsg-6.7+deb11u2	DSA-5142-1
libxml2	source	(unstable)	2.9.14+dfsg-1		1010526

Notes

https://gitlab.gnome.org/GNOME/libxml2/-/commit/2554a2408e09f13652049e5ffb0d26196b02ebab (v2.9.14)
https://gitlab.gnome.org/GNOME/libxml2/-/commit/6c283d83eccd940bcde15634ac8c7f100e3caefd (master)
https://bugs.chromium.org/p/project-zero/issues/detail?id=2272