Medium severity6.5NVD Advisory· Published Feb 18, 2022· Updated Jun 17, 2026

CVE-2022-25313

Description

In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Libexpat Project/Libexpat2 versions
cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*range: <2.4.5
- (no CPE)range: <2.4.5
Oracle Corporation/HTTP Server2 versions
cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*
Oracle Corporation/Zfs Storage Appliance Kit
cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
Siemens Foundation/Sinema Remote Connect Server
cpe:2.3:a:siemens:sinema_remote_connect_server:*:*:*:*:*:*:*:*
Range: <3.1
Debian/linux2 versions
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Fedoraproject/Fedora2 versions
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Expat/libexpatdescription
Libexpat Project/Expatllm-create
Range: <2.4.5
osv-coords47 versions
pkg:rpm/almalinux/expat pkg:rpm/almalinux/expat-devel pkg:rpm/almalinux/mingw32-expat pkg:rpm/almalinux/mingw64-expat pkg:rpm/opensuse/expat&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/expat&distro=openSUSE%20Leap%2015.4 pkg:rpm/opensuse/expat&distro=openSUSE%20Tumbleweed pkg:rpm/suse/expat&distro=HPE%20Helion%20OpenStack%208 pkg:rpm/suse/expat&distro=SUSE%20Enterprise%20Storage%206 pkg:rpm/suse/expat&distro=SUSE%20Enterprise%20Storage%207 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Micro%205.0 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Micro%205.1 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP2 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCL pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCL pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCL pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCL pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSS pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5 pkg:rpm/suse/expat&distro=SUSE%20Manager%20Proxy%204.1 pkg:rpm/suse/expat&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1 pkg:rpm/suse/expat&distro=SUSE%20Manager%20Server%204.1 pkg:rpm/suse/expat&distro=SUSE%20OpenStack%20Cloud%208 pkg:rpm/suse/expat&distro=SUSE%20OpenStack%20Cloud%209 pkg:rpm/suse/expat&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208 pkg:rpm/suse/expat&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 2.2.10-12.el9_0.2+ 46 more
- (no CPE)range: < 2.2.10-12.el9_0.2
- (no CPE)range: < 2.2.10-12.el9_0.2
- (no CPE)range: < 2.4.8-1.el8
- (no CPE)range: < 2.4.8-1.el8
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.4.4-150400.3.6.9
- (no CPE)range: < 2.4.6-1.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.4.4-150400.3.6.9
- (no CPE)range: < 2.0.1-88.42.18.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.0.1-88.42.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1

Patches

Vulnerability mechanics

References

www.oracle.com/security-alerts/cpuapr2022.htmlnvdPatchThird Party Advisory
www.openwall.com/lists/oss-security/2022/02/19/1nvdMailing ListThird Party Advisory
cert-portal.siemens.com/productcert/pdf/ssa-484086.pdfnvdThird Party Advisory
github.com/libexpat/libexpat/pull/558nvdThird Party Advisory
lists.debian.org/debian-lts-announce/2022/03/msg00007.htmlnvdThird Party Advisory
security.gentoo.org/glsa/202209-24nvdThird Party Advisory
security.netapp.com/advisory/ntap-20220303-0008/nvdThird Party Advisory
www.debian.org/security/2022/dsa-5085nvdThird Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/nvd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/nvd

News mentions

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cvss	0.423
epss	0.003
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000