CVE-2011-1927: Linux Kernel

Medium severity, CVSS 5.0. EPSS: 2.6% chance of exploitation in the next 30 days.

The ip_expire function in net/ipv4/ip_fragment.c in the Linux kernel before 2.6.39 does not properly construct ICMP_TIME_EXCEEDED packets after a timeout, which allows remote attackers to cause a denial of service (invalid pointer dereference) via crafted fragmented packets.

Affected products

• Linux Linux Kernel: up to and including 2.6.38.8; version 2.6.38 only; version 2.6.38.1 only; version 2.6.38.2 only; version 2.6.38.3 only; version 2.6.38.4 only; …

Published 2012-06-13. Last modified 2026-06-16.