CVE-2013-4470

Severity: medium (CVSS 6.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2013-11-04 · updated 2026-06-16
Weakness: CWE-264

Description

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.

Affected products

Linux kernel: through 3.11.7; 3.0-rc1, 3.0-rc2, 3.0-rc3, 3.0-rc4, 3.0-rc5, 3.0-rc6 (+266)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c547dbf55d5f8cf615ccc0e7265e98db27d3fb8b
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e93b7d748be887cd7639b113ba7d7ef792a7efb9
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00026.html
http://rhn.redhat.com/errata/RHSA-2013-1801.html
http://rhn.redhat.com/errata/RHSA-2014-0100.html
http://rhn.redhat.com/errata/RHSA-2014-0284.html
http://www.openwall.com/lists/oss-security/2013/10/25/5
http://www.securityfocus.com/bid/63359
http://www.ubuntu.com/usn/USN-2040-1
http://www.ubuntu.com/usn/USN-2042-1
http://www.ubuntu.com/usn/USN-2043-1
http://www.ubuntu.com/usn/USN-2044-1

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