CVE-2013-4563
The udp6_ufo_fragment function in net/ipv6/udp_offload.c in the Linux kernel through 3.12, when...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2013-4563- CVSS 2.0
- 7.1 High
AV:N/AC:M/Au:N/C:N/I:N/A:C - Weakness
- CWE-189
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2013-4563- Updated
- 2026-11-02
EUVDEUVD-2013-4421 No score
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.
- Record
EUVD-2013-4421- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8qgm-44j9-8vrh No score
The udp6_ufo_fragment function in net/ipv6/udp_offload.c in the Linux kernel through 3.12, when...
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.
- Record
GHSA-8qgm-44j9-8vrh- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2013-4563- Updated
- 2026-11-02
OSVDEBIAN-CVE-2013-4563 No score
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.
- Record
DEBIAN-CVE-2013-4563- Updated
- 2026-11-02
OSVUBUNTU-CVE-2013-4563 No score
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.
- Record
UBUNTU-CVE-2013-4563- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2013-4563 is a high vulnerability (CVSS 7.1) in Linux Kernel, published November 19, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.90%, the 90th percentile. Fixed in linux 3.11.10-1.
References
ubuntu.com/usn/USN-2113-1
git.kernel.org?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0e033e04c2678dbbe74a46b23fffb7bb918c288e
github.com/torvalds/linux/commit/0e033e04c2678dbbe74a46b23fffb7bb918c288e
bugzilla.redhat.com/show_bug.cgi?id=1030015
lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html
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openwall.com/lists/oss-security/2013/11/13/9
nvd.nist.gov/vuln/detail/CVE-2013-4563
security-tracker.debian.org/tracker/CVE-2013-4563
ubuntu.com/security/CVE-2013-4563
cve.org/CVERecord?id=CVE-2013-4563