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CVE-2013-3231

14
FAUCET Score

CVE-2013-3231 describes an information disclosure vulnerability in the Linux kernel, specifically within the llc_ui_recvmsg function in versions prior to 3.9-rc7. This flaw allows local users to extract sensitive data from kernel stack memory due to an uninitialized length variable during recvmsg or recvfrom system calls. With a CVSS score of 4.7, this vulnerability has a low attack complexity and requires local access, but can lead to complete confidentiality compromise. There is no evidence of active exploitation, nor are there publicly available exploits in Metasploit or ExploitDB, and community discussion is minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:rc6:*:*:*:*:*:*
3.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.9:rc1:*:*:*:*:*:*
3.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.9:rc2:*:*:*:*:*:*
3.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.9:rc3:*:*:*:*:*:*
3.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.9:rc4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.7MEDIUM

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

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

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
28.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 40th 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 (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-348.12.1.el5
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 MRG 2Fixed in: kernel-rt-0:3.6.11.2-rt33.39.el6rt
View patch
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2013-3231Low

Kernel: llc: Fix missing msg_namelen update in llc_ui_recvmsg

Apr 7, 2013

References

git.kernel.org
lists.fedoraproject.org / pipermail/package-announce/2013-April/103750.html
lists.fedoraproject.org / pipermail/package-announce/2013-May/104480.html
lists.opensuse.org / opensuse-security-announce/2013-07/msg00016.html
lists.opensuse.org / opensuse-security-announce/2013-07/msg00018.html
lists.opensuse.org / opensuse-updates/2013-12/msg00129.html
rhn.redhat.com / errata/RHSA-2013-1645.html
github.com / torvalds/linux/commit/c77a4b9cffb6215a15196ec499490d116dfad181
Vendor Advisory
lkml.org / lkml/2013/4/14/107
Vendor Advisory
mandriva.com / security/advisories
openwall.com / lists/oss-security/2013/04/14/3
ubuntu.com / usn/USN-1837-1