CVE-2015-7499 — Heap-based buffer overflow in nokogiri

Description

Heap-based buffer overflow in the xmlGROW function in parser.c in libxml2 before 2.9.3 allows context-dependent attackers to obtain sensitive process memory information via unspecified vectors.

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	2.9.3+dfsg1-1	—
Debian 13	libxml2	2.9.3+dfsg1-1	—
Debian 12	libxml2	2.9.3+dfsg1-1	—
Debian 8	libxml2	2.9.1+dfsg1-5+deb8u1	DSA-3430-1
Debian 7	libxml2	2.8.0+dfsg1-7+wheezy5	DSA-3430-1

Show 1 more (older releases, extended support, other products)

Release	Package	Fixed in	Advisory
Debian 6.0	libxml2	2.7.8.dfsg-2+squeeze16	DLA-373-1

Ubuntu

Security tracker ↗

Release	Package	Fixed in	Advisory
Ubuntu 14.04 LTS	libxml2	2.9.1+dfsg1-3ubuntu4.6	USN-2875-1, USN-2834-1

Red Hat

Security tracker ↗

Release	Package	Fixed in	Advisory
RHEL 7	libxml2 +3	2.9.1-6.el7_2.2	RHSA-2015:2550
RHEL 6	libxml2 +3	2.7.6-20.el6_7.1	RHSA-2015:2549

SUSE

Security tracker ↗

Release	Package	Fixed in	Advisory
SLES 12 SP1	libxml2 +1	2.9.1-13.1	SUSE-SU-2016:0049-1
SLES 12	libxml2 +1	2.9.1-13.1	SUSE-SU-2016:0049-1
SLES 11 SP4	libxml2	2.7.6-0.34.1	SUSE-SU-2016:0030-1
SLES 11 SP4	libxml2-python	2.7.6-0.34.4	SUSE-SU-2016:0030-1
SLES 11 SP3	libxml2	2.7.6-0.34.1	SUSE-SU-2016:0030-1
SLES 11 SP3	libxml2-python	2.7.6-0.34.4	SUSE-SU-2016:0030-1

Show 4 more (older releases, extended support, other products)

Release	Package	Fixed in	Advisory
SLES for SAP 12 SP1	libxml2 +1	2.9.1-13.1	SUSE-SU-2016:0049-1
SLES for SAP 12	libxml2 +1	2.9.1-13.1	SUSE-SU-2016:0049-1
SLES for SAP 11 SP4	libxml2	2.7.6-0.34.1	SUSE-SU-2016:0030-1
SLES for SAP 11 SP4	libxml2-python	2.7.6-0.34.4	SUSE-SU-2016:0030-1
SLES for SAP 11 SP3	libxml2	2.7.6-0.34.1	SUSE-SU-2016:0030-1
SLES for SAP 11 SP3	libxml2-python	2.7.6-0.34.4	SUSE-SU-2016:0030-1

openSUSE

Security tracker ↗

Release	Package	Fixed in	Advisory
openSUSE Tumbleweed	libxml2	2.9.4-1.22	openSUSE-SU-2024:10192-1
openSUSE Tumbleweed	ruby3.2-rubygem-nokogiri	1.13.9-1.7	openSUSE-SU-2024:13165-1
openSUSE Tumbleweed	rubygem-nokogiri	1.6.8.1-1.3	openSUSE-SU-2026:10356-1, openSUSE-SU-2025:14697-1, openSUSE-SU-2024:14174-1

Amazon Linux

Release	Package	Fixed in	Advisory
Amazon Linux 2	libxml2 +3	2.9.1-6.amzn2.3.2	ALAS2-2019-1220

Oracle Linux

Release	Package	Fixed in	Advisory
Oracle Linux 7	libxml2 +3	2.9.1-6.0.1.el7_2.2	ELSA-2015-2550

Affected packages

Ecosystem	Package	Affected	Fixed	Record
RubyGems	nokogiri	>= 1.6.0, < 1.6.7.2	1.6.7.2	GHSA-jxjr-5h69-qw3w

Advisories 19

RHSA-2015:2550 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
RHSA-2015:2549 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
USN-2875-1 libxml2 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
USN-2834-1 libxml2 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
openSUSE-SU-2026:10356-1 ruby4.0-rubygem-nokogiri-1.18.9-1.4 on GA media SUSE / openSUSE Security Updates · Mar 14, 2026
DLA-373-1 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
DSA-3430-1 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
openSUSE-SU-2025:14697-1 ruby3.4-rubygem-nokogiri-1.18.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
openSUSE-SU-2024:10192-1 libxml2-2-2.9.4-1.22 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
openSUSE-SU-2024:10549-1 ruby2.2-rubygem-nokogiri-1.6.8.1-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
openSUSE-SU-2024:13165-1 ruby3.2-rubygem-nokogiri-1.13.9-1.7 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
SUSE-SU-2016:0030-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
openSUSE-SU-2024:14174-1 ruby3.3-rubygem-nokogiri-1.15.5-1.5 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
SUSE-SU-2016:0049-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
openSUSE-SU-2024:11912-1 ruby3.1-rubygem-nokogiri-1.13.3-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
WID-SEC-2024-3389 libxml2: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 30, 2025
WID-SEC-2023-1614 Tenable Security Nessus Network Monitor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 25, 2023
ALAS2-2019-1220 Moderate: libxml2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 30, 2019
ELSA-2015-2550 Moderate: libxml2 security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 7, 2015

References

RHSA-2015:2550 vendor-advisory
APPLE-SA-2016-03-21-5 vendor-advisory
openSUSE-SU-2016:0106 vendor-advisory
https://support.apple.com/HT206167
https://support.apple.com/HT206168
DSA-3430 vendor-advisory
APPLE-SA-2016-03-21-1 vendor-advisory
http://xmlsoft.org/news.html
https://git.gnome.org/browse/libxml2/commit/?id=35bcb1d758ed70aa7b257c9c3b3ff55e54e3d0da
RHSA-2016:1089 vendor-advisory
https://git.gnome.org/browse/libxml2/commit/?id=28cd9cb747a94483f4aea7f0968d202c20bb4cfc
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
APPLE-SA-2016-03-21-2 vendor-advisory
USN-2834-1 vendor-advisory
1034243 vdb-entry
RHSA-2015:2549 vendor-advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1281925
HPSBGN03537 vendor-advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04944172
GLSA-201701-37 vendor-advisory
openSUSE-SU-2015:2372 vendor-advisory
APPLE-SA-2016-03-21-3 vendor-advisory
79509 vdb-entry
https://support.apple.com/HT206169
https://support.apple.com/HT206166