Memory Corruption and Privilege Escalation Vulnerability in Linux Kernel with UDP Fragmentation Offload (UFO)

CVE-2013-4470 · MEDIUM Severity

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

The Linux kernel before 3.12, when UDP Fragmentation Offload (UFO) is enabled, does not properly initialize certain data structures, which allows local users to cause a denial of service (memory corruption and system crash) or possibly gain privileges via a crafted application that uses the UDP_CORK option in a setsockopt system call and sends both short and long packets, related to the ip_ufo_append_data function in net/ipv4/ip_output.c and the ip6_ufo_append_data function in net/ipv6/ip6_output.c.

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