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Vulnerability record · CVE-2022-29824 · published 3 May 2022

CVE-2022-29824: Xmlsoft libxml2 integer overflow vulnerability

Xmlsoft · Libxml2

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.

6.5 CVSS 3.1 Medium EPSS 3.8% · top 10.5% CWE-190 · Integer overflow
6.5CVSS 3.1 base score, v2 4.3
3.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
19Affected product versions listed by NVD
28References, 4 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

19 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/167345/libxml2-xmlBufAdd-Heap-Buffer-Overflow.html ExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/169825/libxml2-xmlParseNameComplex-Integer-Overflow.html ExploitThird Party AdvisoryVDB Entry
https://gitlab.gnome.org/GNOME/libxml2/-/commit/2554a2408e09f13652049e5ffb0d26196b02ebab PatchThird Party Advisory
https://gitlab.gnome.org/GNOME/libxml2/-/commit/6c283d83eccd940bcde15634ac8c7f100e3caefd PatchThird Party Advisory
https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.9.14 Release NotesThird Party Advisory
https://gitlab.gnome.org/GNOME/libxslt/-/tags ProductThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00023.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZOBT5Y6Y2QLDDX2HZGMV7M
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P3NVZVWFRBXBI3AKZZWUWY6
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P5363EDV5VHZ5C77ODA43RY
https://security.gentoo.org/glsa/202210-03 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220715-0006/ Third Party Advisory
https://www.debian.org/security/2022/dsa-5142 Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory
http://packetstormsecurity.com/files/167345/libxml2-xmlBufAdd-Heap-Buffer-Overflow.html ExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/169825/libxml2-xmlParseNameComplex-Integer-Overflow.html ExploitThird Party AdvisoryVDB Entry
https://gitlab.gnome.org/GNOME/libxml2/-/commit/2554a2408e09f13652049e5ffb0d26196b02ebab PatchThird Party Advisory
https://gitlab.gnome.org/GNOME/libxml2/-/commit/6c283d83eccd940bcde15634ac8c7f100e3caefd PatchThird Party Advisory
https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.9.14 Release NotesThird Party Advisory
https://gitlab.gnome.org/GNOME/libxslt/-/tags ProductThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00023.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZOBT5Y6Y2QLDDX2HZGMV7M
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P3NVZVWFRBXBI3AKZZWUWY6
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P5363EDV5VHZ5C77ODA43RY
https://security.gentoo.org/glsa/202210-03 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220715-0006/ Third Party Advisory
https://www.debian.org/security/2022/dsa-5142 Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory

Track CVE-2022-29824 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2022-29824), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.