CVE-2013-4563

HighCVSS 7.1/10Last modified Jun 16, 2026

Description

The udp6_ufo_fragment function in net/ipv6/udp_offload.c in the Linux kernel through 3.12, when UDP Fragmentation Offload (UFO) is enabled, does not properly perform a certain size comparison before inserting a fragment header, which allows remote attackers to cause a denial of service (panic) via a large IPv6 UDP packet, as demonstrated by use of the Token Bucket Filter (TBF) queueing discipline.

Metrics

CVSS 2.0 7.1/10AV:N/AC:M/Au:N/C:N/I:N/A:C

Weakness enumeration

CWE-189

Affected software

No affected versions have been published.

Timeline

Published: Nov 20, 2013
Last modified: Jun 16, 2026
NVD status: Modified

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