Description
parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in parameter entities.
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 | 2.9.10+dfsg-2 | — |
| Debian 13 | libxml2 | 2.9.10+dfsg-2 | — |
| Debian 12 | libxml2 | 2.9.10+dfsg-2 | — |
| Debian 9 | libxml2 | 2.9.4+dfsg1-2.2+deb9u6 | DLA-2972-1 |
| Debian 7 | libxml2 | 2.8.0+dfsg1-7+wheezy11 | DLA-1194-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libxml2 | 2.9.4+dfsg1-6.1ubuntu1.2 | USN-3739-1 |
| Ubuntu 16.04 LTS | libxml2 | 2.9.3+dfsg1-1ubuntu0.4 | USN-3739-1, USN-3504-1 |
| Ubuntu 14.04 LTS | libxml2 | 2.9.1+dfsg1-3ubuntu4.11 | USN-3739-1, USN-3504-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
| SLES 12 SP4 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
| SLES 12 SP3 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
| SLES 12 SP2 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
| SLES 11 SP4 | libxml2 +1 | 2.7.6-0.77.10.1 | SUSE-SU-2018:0395-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
| SLES for SAP 12 SP4 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
| SLES for SAP 12 SP3 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
| SLES for SAP 11 SP4 | libxml2 +1 | 2.7.6-0.77.10.1 | SUSE-SU-2018:0395-1 |
| SUSE OpenStack Cloud Crowbar 9 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
| SUSE OpenStack Cloud Crowbar 8 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
| SUSE OpenStack Cloud 9 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
| SUSE OpenStack Cloud 8 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
| SUSE HPE Helion OpenStack 8 | libxml2 +1 | 2.9.4-46.54.3 | SUSE-SU-2022:1833-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | clamav | 0.100.1-r0 | — |
| Alpine v3.23 | clamav | 0.100.1-r0 | — |
| Alpine v3.22 | clamav | 0.100.1-r0 | — |
| Alpine v3.21 | clamav | 0.100.1-r0 | — |
| Alpine v3.20 | clamav | 0.100.1-r0 | — |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | clamav | 0.100.1-r0 | — |
| Alpine v3.18 | clamav | 0.100.1-r0 | — |
| Alpine v3.17 | clamav | 0.100.1-r0 | — |
| Alpine v3.16 | clamav | 0.100.1-r0 | — |
| Alpine v3.15 | clamav | 0.100.1-r0 | — |
| Alpine v3.14 | clamav | 0.100.1-r0 | — |
| Alpine v3.13 | clamav | 0.100.1-r0 | — |
| Alpine v3.12 | clamav | 0.100.1-r0 | — |
| Alpine v3.11 | clamav | 0.100.1-r0 | — |
| Alpine v3.10 | clamav | 0.100.1-r0 | — |
| Alpine v3.9 | clamav | 0.100.1-r0 | — |
| Alpine v3.8 | clamav | 0.100.1-r0 | — |
| Alpine v3.7 | clamav | 0.100.1-r0 | — |
| Alpine v3.6 | clamav | 0.100.1-r0 | — |
| Alpine v3.5 | clamav | 0.100.1-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| RubyGems | nokogiri | < 1.8.1 | 1.8.1 | GHSA-x2fm-93ww-ggvx |
Advisories 10
- 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
- USN-3739-1 libxml2 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3504-1 libxml2 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-2972-1 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1194-1 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2022:1833-1 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-2023-1158 libxml2: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Jun 30, 2025
- SUSE-SU-2018:0395-1 Security update for libxml2 SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-1614 Tenable Security Nessus Network Monitor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 25, 2023
References
- https://blog.clamav.net/2018/07/clamav-01001-has-been-released.html
- [debian-lts-announce] 20171130 [SECURITY] [DLA 1194-1] libxml2 security update mailing-list
- http://xmlsoft.org/news.html
- USN-3739-1 vendor-advisory
- https://github.com/GNOME/libxml2/commit/899a5d9f0ed13b8e32449a08a361e0de127dd961
- https://bugzilla.gnome.org/show_bug.cgi?id=759579
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 mailing-list
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 mailing-list
- [debian-lts-announce] 20220408 [SECURITY] [DLA 2972-1] libxml2 security update mailing-list
- https://gitlab.gnome.org/GNOME/libxml2/-/commit/899a5d9f0ed13b8e32449a08a361e0de127dd961