CVE-2013-4563
High
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.
SeverityHigh
CVSS7.1
Exploit probability—
Product
Linux Kernel
PublishedNov 20, 2013
First seenNov 20, 2013
How to fix
Update
- linux linux_kernel3.12.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.9.8 ≤ v ≤ 3.10.23, 3.11 ≤ v < 3.12.4 | 3.12.4 |
| canonical ubuntu_linux | 12.04, 13.10 | — |
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