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CVE-2013-4387

23
FAUCET Score

CVE-2013-4387 is a memory corruption vulnerability in the Linux kernel (through version 3.11.4) affecting the net/ipv6/ip6_output.c component. It arises from improper handling of UDP Fragmentation Offload (UFO) for small packets following the UFO queueing of a large packet. This flaw allows remote attackers to trigger a denial of service (system crash) and potentially other unspecified impacts. The vulnerability has a CVSS score of 6.1, indicating a medium severity, with an adjacent network attack vector and low attack complexity. 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
<= 3.11.4CPE 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

6.1MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
6.5
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.58%
Probability of exploitation in next 30 days
EPSS Percentile
83.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0258 is in the 96th percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-431.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.4 Extended Update SupportFixed in: kernel-0:2.6.32-358.37.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-0:3.8.13-rt14.25.el6rt
View patch

Vendor Advisories (1)

redhatCVE-2013-4387Important

Kernel: net: IPv6: panic when UFO=On for an interface

Sep 21, 2013

References

git.kernel.org
rhn.redhat.com / errata/RHSA-2013-1490.html
rhn.redhat.com / errata/RHSA-2013-1645.html
rhn.redhat.com / errata/RHSA-2014-0284.html
bugzilla.redhat.com / show_bug.cgi
github.com / torvalds/linux/commit/2811ebac2521ceac84f2bdae402455baa6a7fb47
ExploitPatch
openwall.com / lists/oss-security/2013/09/29/1
ubuntu.com / usn/USN-2019-1
ubuntu.com / usn/USN-2021-1
ubuntu.com / usn/USN-2022-1
ubuntu.com / usn/USN-2024-1
ubuntu.com / usn/USN-2038-1
ubuntu.com / usn/USN-2039-1
ubuntu.com / usn/USN-2041-1
ubuntu.com / usn/USN-2045-1
ubuntu.com / usn/USN-2049-1
ubuntu.com / usn/USN-2050-1