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CVE-2013-4163

14
FAUCET Score

CVE-2013-4163 describes a denial-of-service vulnerability in the IPv6 implementation of the Linux kernel, affecting versions up to 3.10.3. A flaw in the ip6_append_data_mtu function, specifically its handling of the IPV6_MTU setsockopt option, allows local users to trigger a system crash (BUG) by crafting an application that uses the UDP_CORK option. This vulnerability has a CVSS score of 4.7, indicating a medium severity with local access and medium attack complexity leading to a complete availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.10.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.0:rc1:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.0:rc3:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.0:rc4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.7MEDIUM

AV:L/AC:M/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 78th percentile among its peer group of 1,595 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-0:3.6.11.5-rt37.55.el6rt
View patch

Vendor Advisories (1)

redhatCVE-2013-4163Moderate

Kernel: net: panic while appending data to a corked IPv6 socket in ip6_append_data_mtu

Jul 1, 2013

References

git.kernel.org
lists.opensuse.org / opensuse-security-announce/2013-09/msg00003.html
lists.opensuse.org / opensuse-security-announce/2013-09/msg00004.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/54148
github.com / torvalds/linux/commit/75a493e60ac4bbe2e977e7129d6d8cbb0dd236be
ExploitPatch
openwall.com / lists/oss-security/2013/07/23/10
securityfocus.com / bid/61412
ubuntu.com / usn/USN-1938-1
ubuntu.com / usn/USN-1941-1
ubuntu.com / usn/USN-1942-1
ubuntu.com / usn/USN-1943-1
ubuntu.com / usn/USN-1944-1
ubuntu.com / usn/USN-1945-1
ubuntu.com / usn/USN-1946-1
ubuntu.com / usn/USN-1947-1