Description
Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input.
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 | 2.12.7+dfsg+really2.9.14-1 | — |
| Debian 13 | libxml2 | 2.12.7+dfsg+really2.9.14-1 | — |
| Debian 12 | libxml2 | 2.9.14+dfsg-1.3~deb12u2 | DSA-5949-1 |
| Debian 11 | libxml2 | 2.9.10+dfsg-6.7+deb11u6 | DLA-4064-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | libxml2 +2 | 2.9.13-5.el9_3 | RHSA-2023:7747 |
| RHEL 8 | libxml2 +2 | 2.9.7-18.el8_9 | RHSA-2024:0119 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.8 EUS | libxml2 +2 | 2.9.7-16.el8_8.2 | RHSA-2023:7544 |
| 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 | 2.9.13-5.el9_3 | ALSA-2023:7747 |
| AlmaLinux 8 | libxml2 +2 | 2.9.7-18.el8_9 | ALSA-2024:0119 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | libxml2 | 2.9.7-18.el8 | RLSA-2024:0119 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | libxml2 +1 | 2.10.3-150500.5.8.1 | SUSE-SU-2023:3666-1 |
| SLES 15 SP4 | libxml2 +1 | 2.9.14-150400.5.22.1 | SUSE-SU-2023:3699-1 |
| SLES 15 SP3 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SLES 15 SP2 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SLES 15 SP1 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
Show 18 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | libxml2 +1 | 2.9.4-46.65.1 | SUSE-SU-2023:3665-1 |
| SLES 3 | libxml2-python | 2.9.14-150400.5.22.1 | SUSE-SU-2023:3699-1, SUSE-SU-2023:3666-1 |
| SLES for SAP 15 SP3 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SLES for SAP 15 SP2 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SLES for SAP 15 SP1 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SLES for SAP 12 SP5 | libxml2 +1 | 2.9.4-46.65.1 | SUSE-SU-2023:3665-1 |
| SLE Micro 5.5 | libxml2 +1 | 2.10.3-150500.5.8.1 | SUSE-SU-2023:3666-2 |
| SLE Micro 5.4 | libxml2 +1 | 2.9.14-150400.5.22.1 | SUSE-SU-2023:3699-1 |
| SLE Micro 5.3 | libxml2 +1 | 2.9.14-150400.5.22.1 | SUSE-SU-2023:3699-1 |
| SLE Micro 5.2 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SLE Micro 5.1 | libxml2 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SLE HPC 15 SP3 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SLE HPC 15 SP2 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SLE HPC 15 SP1 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SUSE Manager Server 4.2 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SUSE Manager Proxy 4.2 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SUSE Enterprise Storage 7.1 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| SUSE Enterprise Storage 7 | libxml2 +1 | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libxml2 | 2.10.4-3.1 | openSUSE-SU-2024:13192-1 |
| openSUSE Leap 15.5 | libxml2 +1 | 2.10.3-150500.5.8.1 | SUSE-SU-2023:3666-1 |
| openSUSE Leap 15.5 | python-libxml2-python | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
| openSUSE Leap 15.4 | libxml2 +1 | 2.9.14-150400.5.22.1 | SUSE-SU-2023:3699-1 |
| openSUSE Leap 15.4 | python-libxml2-python | 2.9.7-150000.3.60.1 | SUSE-SU-2023:3698-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | libxml2 +3 | 2.10.4-1.amzn2023.0.4 | ALAS2023-2023-343 |
| Amazon Linux 2 | libxml2 +3 | 2.9.1-6.amzn2.5.11 | ALAS2-2023-2249 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | libxml2 +2 | 2.9.13-5.el9_3 | ELSA-2023-7747 |
| Oracle Linux 8 | libxml2 +2 | 2.9.7-18.el8_9 | ELSA-2024-0119 |
Advisories 32
- ALSA-2023:7747 Moderate: libxml2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:0119 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
- 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
- RHSA-2024:0119 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2023:7747 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2023:7544 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- DSA-5949-1 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4064-1 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2023:3666-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3698-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13192-1 libxml2-2-2.10.4-3.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3699-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- WID-SEC-2023-2214 libxml2: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Aug 3, 2025
- RLSA-2024:0119 Moderate: libxml2 security update Rocky Linux Security Advisories · May 7, 2025
- SUSE-SU-2023:3666-2 Security update for libxml2 SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2023:3665-1 Security update for libxml2 SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-0521 IBM MQ: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 15, 2024
- WID-SEC-2024-1248 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 21, 2024
- WID-SEC-2024-2100 IBM Power Hardware Management Console: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 10, 2024
- NCSC-2024-0332 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Aug 13, 2024
- SSA-784301 SSA-784301: Multiple Vulnerabilities in SINEC NMS Before V3.0 Siemens ProductCERT · Aug 13, 2024
- ICSA-24-228-06 Siemens SINEC NMS CISA ICS & IT advisories · Aug 13, 2024
- NCSC-2024-0246 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · 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-556635 SSA-556635: Multiple Vulnerabilities in Telecontrol Server Basic before V3.1.2.0 Siemens ProductCERT · Apr 9, 2024
- ELSA-2024-0119 Moderate: libxml2 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jan 10, 2024
- ELSA-2023-7747 Moderate: libxml2 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Dec 13, 2023
- ALAS2023-2023-343 Moderate: libxml2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 20, 2023
- ALAS2-2023-2249 Moderate: libxml2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 20, 2023