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CVE-2012-4444

21
FAUCET Score

CVE-2012-4444 describes a vulnerability in the Linux kernel's ip6_frag_queue function (net/ipv6/reassembly.c) prior to version 2.6.36, allowing remote attackers to bypass network restrictions using overlapping IPv6 fragments. This vulnerability has a CVSS score of 5.0, indicating a medium severity, with a network attack vector, low attack complexity, and potential for partial integrity impact. There is no evidence of active exploitation, publicly available exploit code in Metasploit or ExploitDB, or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.36CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:rc8:*:*:*:*:*:*
2.6.30CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.30:*:*:*:*:*:*:*
2.6.30CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.30:rc1:*:*:*:*:*:*
2.6.30CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.30:rc2:*:*:*:*:*:*
2.6.30CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.30:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.61%
Probability of exploitation in next 30 days
EPSS Percentile
88.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0361 is in the 85th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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 (5)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-348.1.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-279.19.1.el6
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux Extended Update Support 5.9Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2012-4444Low

kernel: net: acceptation of overlapping ipv6 fragments

Dec 1, 2009

References

ftp.osuosl.org / pub/linux/kernel/v2.6/ChangeLog-2.6.36
git.kernel.org
lists.opensuse.org / opensuse-security-announce/2013-06/msg00000.html
rhn.redhat.com / errata/RHSA-2012-1580.html
bugzilla.redhat.com / show_bug.cgi
Patch
github.com / torvalds/linux/commit/70789d7052239992824628db8133de08dc78e593
PatchVendor Advisory
media.blackhat.com / bh-eu-12/Atlasis/bh-eu-12-Atlasis-Attacking_IPv6-WP.pdf
openwall.com / lists/oss-security/2012/11/09/2
ubuntu.com / usn/USN-1660-1
ubuntu.com / usn/USN-1661-1