CVE-2011-2821: Apple iPhone OS

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

Double free vulnerability in libxml2, as used in Google Chrome before 13.0.782.215, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted XPath expression.

Affected products

• Apple iPhone OS: before 6.0 (fixed in 6.0)
• Apple Mac OS X: before 10.7.4 (fixed in 10.7.4)
• Debian Debian Linux: version 5.0 only; version 6.0 only; version 7.0 only
• Google Chrome: before 13.0.782.215 (fixed in 13.0.782.215)
• Red Hat Enterprise Linux Desktop: version 6.0 only
• Red Hat Enterprise Linux Eus: version 6.3 only
• Red Hat Enterprise Linux Server: version 6.0 only
• Red Hat Enterprise Linux Workstation: version 6.0 only

Published 2011-08-29. Last modified 2026-06-16.