Description
In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libxml2 | 2.9.14+dfsg-1.2 | — |
| Debian 13 | libxml2 | 2.9.14+dfsg-1.2 | — |
| Debian 12 | libxml2 | 2.9.14+dfsg-1.2 | — |
| Debian 11 | libxml2 | 2.9.10+dfsg-6.7+deb11u4 | DSA-5391-1 |
| Debian 10 | libxml2 | 2.9.4+dfsg1-7+deb10u6 | DLA-3405-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | libxml2 | 2.9.13+dfsg-1ubuntu0.3 | USN-6028-1 |
| Ubuntu 20.04 LTS | libxml2 | 2.9.10+dfsg-5ubuntu0.20.04.6 | USN-6028-1 |
| Ubuntu 18.04 LTS | libxml2 | 2.9.4+dfsg1-6.1ubuntu1.9 | USN-6028-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | libxml2 | 2.9.3+dfsg1-1ubuntu0.7+esm5 | USN-6028-1 |
| Ubuntu Pro 14.04 LTS | libxml2 | 2.9.1+dfsg1-3ubuntu4.13+esm5 | USN-6028-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | libxml2 +2 | 2.9.13-3.el9_2.1 | RHSA-2023:4349 |
| RHEL 8 | libxml2 +2 | 2.9.7-16.el8_8.1 | RHSA-2023:4529 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.6 EUS | libxml2 +2 | 2.9.7-13.el8_6.4 | RHSA-2024:0413 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | libxml2 +2 | 2.9.13-3.el9_2.1 | ALSA-2023:4349 |
| AlmaLinux 8 | libxml2 +2 | 2.9.7-16.el8_8.1 | ALSA-2023:4529 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | libxml2 | 2.9.7-16.el8_8.1 | RLSA-2023:4529 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | libxml2 +1 | 2.9.14-150400.5.16.1 | SUSE-SU-2023:2053-1 |
| SLES 15 SP3 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SLES 15 SP2 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SLES 15 SP1 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SLES 12 SP5 | libxml2 +1 | 2.9.4-46.62.1 | SUSE-SU-2023:3665-1, SUSE-SU-2023:2054-1 |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SLES for SAP 15 SP2 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SLES for SAP 15 SP1 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SLES for SAP 12 SP5 | libxml2 +1 | 2.9.4-46.62.1 | SUSE-SU-2023:3665-1, SUSE-SU-2023:2054-1 |
| SLE Real Time 15 SP3 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SLE Micro 5.4 | libxml2 +1 | 2.9.14-150400.5.16.1 | SUSE-SU-2023:2053-1 |
| SLE Micro 5.3 | libxml2 +1 | 2.9.14-150400.5.16.1 | SUSE-SU-2023:2053-1 |
| SLE Micro 5.2 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SLE Micro 5.1 | libxml2 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SLE HPC 15 SP3 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SLE HPC 15 SP2 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SLE HPC 15 SP1 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SUSE Manager Server 4.2 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SUSE Manager Proxy 4.2 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SUSE Enterprise Storage 7.1 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
| SUSE Enterprise Storage 7 | libxml2 +1 | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libxml2 | 2.10.4-1.1 | openSUSE-SU-2024:12877-1 |
| openSUSE Leap 15.4 | libxml2 +1 | 2.9.14-150400.5.16.1 | SUSE-SU-2023:2053-1 |
| openSUSE Leap 15.4 | python-libxml2-python | 2.9.7-150000.3.57.1 | SUSE-SU-2023:2048-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | libxml2 +1 | 2.9.14-150400.5.16.1 | SUSE-SU-2023:2053-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libxml2 | 2.10.4-r0 | — |
| Alpine v3.23 | libxml2 | 2.10.4-r0 | — |
| Alpine v3.22 | libxml2 | 2.10.4-r0 | — |
| Alpine v3.21 | libxml2 | 2.10.4-r0 | — |
| Alpine v3.20 | libxml2 | 2.10.4-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libxml2 | 2.10.4-r0 | — |
| Alpine v3.18 | libxml2 | 2.10.4-r0 | — |
| Alpine v3.17 | libxml2 | 2.10.4-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | libxml2 +3 | 2.10.4-1.amzn2023.0.1 | ALAS2023-2023-163 |
| Amazon Linux 2 | libxml2 +3 | 2.9.1-6.amzn2.5.8 | ALAS2-2023-2021 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | libxml2 | 2.10.4-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | libxml2 +2 | 2.9.13-3.el9_2.1 | ELSA-2023-4349 |
| Oracle Linux 8 | libxml2 +2 | 2.9.7-16.el8_8.1 | ELSA-2023-4529 |
Advisories 40
- ALSA-2023:4349 Moderate: libxml2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:4529 Moderate: libxml2 security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:0413 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2023:4529 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2023:4349 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2023-2031 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- USN-6028-1 libxml2 vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- DSA-5391-1 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3405-1 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:4529 Moderate: libxml2 security update Rocky Linux Security Advisories · Feb 5, 2026
- openSUSE-SU-2024:12877-1 libxml2-2-2.10.4-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2048-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2054-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2053-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-0920 libxml2: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Nov 6, 2025
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- ICSA-25-044-09 Siemens SCALANCE W700 IEEE 802.11ax CISA ICS & IT advisories · May 6, 2025
- SUSE-SU-2023:3665-1 Security update for libxml2 SUSE / openSUSE Security Updates · May 2, 2025
- NCSC-2025-0061 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Feb 14, 2025
- NCSC-2025-0051 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Feb 11, 2025
- SSA-769027 SSA-769027: Multiple Vulnerabilities fixed in SCALANCE W700 IEEE 802.11ax devices before V3.0.0 Siemens ProductCERT · Feb 11, 2025
- WID-SEC-2024-0119 Oracle MySQL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 21, 2024
- NCSC-2024-0411 Kwetsbaarheden verholpen in Oracle Database producten NCSC-NL (Netherlands) · Oct 17, 2024
- NCSC-2024-0246 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Jun 11, 2024
- ICSA-24-165-10 Siemens SIMATIC and SIPLUS CISA ICS & IT advisories · Jun 11, 2024
- SSA-341067 SSA-341067: Multiple vulnerabilities in third-party components in ST7 ScadaConnect before V1.1 Siemens ProductCERT · Jun 11, 2024
- ICSA-24-165-04 Siemens ST7 ScadaConnect CISA ICS & IT advisories · Jun 11, 2024
- SSA-625862 SSA-625862: Multiple Vulnerabilities in Third-Party Components in SIMATIC CP 1542SP-1 and CP 1543SP-1 before V2.3 Siemens ProductCERT · Jun 11, 2024
- WID-SEC-2023-1794 Oracle MySQL: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 30, 2024
- SSA-556635 SSA-556635: Multiple Vulnerabilities in Telecontrol Server Basic before V3.1.2.0 Siemens ProductCERT · Apr 9, 2024
- WID-SEC-2023-2674 Oracle Fusion Middleware: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 26, 2023
- WID-SEC-2023-1614 Tenable Security Nessus Network Monitor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 25, 2023
- WID-SEC-2023-2679 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 17, 2023
- WID-SEC-2023-2101 genua genucenter: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 20, 2023
- ELSA-2023-4529 Moderate: libxml2 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 10, 2023
- ELSA-2023-4349 Moderate: libxml2 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 2, 2023
- WID-SEC-2023-1812 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 20, 2023
- ALAS2023-2023-163 Moderate: libxml2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · May 3, 2023
- ALAS2-2023-2021 Moderate: libxml2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 2, 2023
References
- https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/491
- [debian-lts-announce] 20230430 [SECURITY] [DLA 3405-1] libxml2 security update mailing-list
- https://security.netapp.com/advisory/ntap-20230601-0006/
- https://security.netapp.com/advisory/ntap-20240201-0005/