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CVE-2013-6431

14
FAUCET Score

CVE-2013-6431 describes a denial-of-service vulnerability in the Linux kernel (versions before 3.11.5) affecting the fib6_add function. This flaw allows a local attacker with CAP_NET_ADMIN capabilities to trigger a NULL pointer dereference and system crash via a crafted IPv6 SIOCADDRT ioctl call. The vulnerability has a CVSS score of 4.7, indicating a low-severity local attack with high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion 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

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
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 69th 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-0:3.8.13-rt27.33.el6rt
View patch

Vendor Advisories (1)

redhatCVE-2013-6431Low

kernel: net: fib: fib6_add: potential NULL pointer dereference

Sep 7, 2013

References

git.kernel.org
lists.opensuse.org / opensuse-security-announce/2014-02/msg00002.html
rhn.redhat.com / errata/RHSA-2014-0100.html
bugzilla.redhat.com / show_bug.cgi
github.com / torvalds/linux/commit/ae7b4e1f213aa659aedf9c6ecad0bf5f0476e1e2
ExploitPatch
kernel.org / pub/linux/kernel/v3.x/ChangeLog-3.11.5
openwall.com / lists/oss-security/2013/12/06/5
Patch