Denial of Service Vulnerability in Linux Kernel's ip_expire Function

CVE-2011-1927 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:N/A:P

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.

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