CVE-2013-4387

Severity: medium (CVSS 6.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2013-10-10 · updated 2026-06-16
Weakness: CWE-119

Description

net/ipv6/ip6_output.c in the Linux kernel through 3.11.4 does not properly determine the need for UDP Fragmentation Offload (UFO) processing of small packets after the UFO queueing of a large packet, which allows remote attackers to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via network traffic that triggers a large response packet.

Affected products

Linux kernel: through 3.11.4; 3.0-rc1, 3.0-rc2, 3.0-rc3, 3.0-rc4, 3.0-rc5, 3.0-rc6 (+256)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2811ebac2521ceac84f2bdae402455baa6a7fb47
http://rhn.redhat.com/errata/RHSA-2013-1490.html
http://rhn.redhat.com/errata/RHSA-2013-1645.html
http://rhn.redhat.com/errata/RHSA-2014-0284.html
http://www.openwall.com/lists/oss-security/2013/09/29/1
http://www.ubuntu.com/usn/USN-2019-1
http://www.ubuntu.com/usn/USN-2021-1
http://www.ubuntu.com/usn/USN-2022-1
http://www.ubuntu.com/usn/USN-2024-1
http://www.ubuntu.com/usn/USN-2038-1
http://www.ubuntu.com/usn/USN-2039-1
http://www.ubuntu.com/usn/USN-2041-1

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