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Fencer Intel
medium 6.8

CVE-2011-2834 json

Double free vulnerability in libxml2, as used in Google Chrome before 14.0.835.163, allows remote attackers to cause a denial of service or…

published 2011-09-17 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2808

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

Double free vulnerability in libxml2, as used in Google Chrome before 14.0.835.163, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to XPath handling.

Patch / fix

  • google chrome 14.0.835.163
  • apple iphone_os 6.0
  • apple mac_os_x 10.7.4
  • libxml2 Debian 14, Debian 13, Debian 12 2.7.8.dfsg-5

debian advisories DEBIAN-CVE-2011-2834

  • mingw32-libxml2 RHEL 6 2.7.6-6.el6_3
  • libxml2 RHEL 5 2.6.26-2.1.12.el5_7.2
  • libxml2-python RHEL 5 2.6.26-2.1.12.el5_7.2
  • libxml2 RHEL 4 2.6.16-12.9
  • libxml2-python RHEL 4 2.6.16-12.9
  • libxml2 RHEL 6 2.7.6-4.el6
  • libxml2-python RHEL 6 2.7.6-4.el6

red hat advisories RHSA-2013:0217RHSA-2012:0017RHSA-2012:0016RHSA-2011:1749

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-2834 updated cvss 4.3

libxml2: double-free caused by malformed XPath expression in XSLT

  • Red Hat Enterprise Linux (v. 5 server) libxml2 2.6.26-2.1.12.el5_7.2, libxml2-python 2.6.26-2.1.12.el5_7.2
    fixed: vendor fix RHSA-2012:0017
  • Red Hat Enterprise Linux AS version 4 libxml2 2.6.16-12.9, libxml2-python 2.6.16-12.9
    fixed: vendor fix RHSA-2012:0016
  • Red Hat Enterprise Linux Desktop (v. 5 client) libxml2 2.6.26-2.1.12.el5_7.2, libxml2-python 2.6.26-2.1.12.el5_7.2
    fixed: vendor fix RHSA-2012:0017
  • Red Hat Enterprise Linux Desktop (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6
    fixed: vendor fix RHSA-2011:1749
  • Red Hat Enterprise Linux Desktop Optional (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3
    fixed: vendor fix RHSA-2013:0217
  • Red Hat Enterprise Linux Desktop version 4 libxml2 2.6.16-12.9, libxml2-python 2.6.16-12.9 Red Hat Enterprise Linux ES version 4 libxml2 2.6.16-12.9, libxml2-python 2.6.16-12.9
    fixed: vendor fix RHSA-2012:0016
  • Red Hat Enterprise Linux HPC Node (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6
    fixed: vendor fix RHSA-2011:1749
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3
    fixed: vendor fix RHSA-2013:0217
show 6 more
  • Red Hat Enterprise Linux Server (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6
    fixed: vendor fix RHSA-2011:1749
  • Red Hat Enterprise Linux Server Optional (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3
    fixed: vendor fix RHSA-2013:0217
  • Red Hat Enterprise Linux Workstation (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6
    fixed: vendor fix RHSA-2011:1749
  • Red Hat Enterprise Linux Workstation Optional (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3
    fixed: vendor fix RHSA-2013:0217
  • Red Hat Enterprise Linux WS version 4 libxml2 2.6.16-12.9, libxml2-python 2.6.16-12.9
    fixed: vendor fix RHSA-2012:0016
  • Red Hat RHEL Desktop Workstation (v. 5 client) libxml2 2.6.26-2.1.12.el5_7.2, libxml2-python 2.6.26-2.1.12.el5_7.2
    fixed: vendor fix RHSA-2012:0017

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.04% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.