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CVE-2012-3520

14
FAUCET Score

CVE-2012-3520 describes a vulnerability in the Netlink implementation of the Linux kernel prior to version 3.2.30. This flaw allows local users to spoof Netlink communication, potentially impacting services like Avahi or NetworkManager, by sending specially crafted messages that lack SCM_CREDENTIALS data. The vulnerability has a low CVSS score of 1.9, indicating a low severity with local access and medium attack complexity, resulting in a partial integrity 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
<= 3.2.29CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
2.3.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.3.2:*:*:*:*:*:*:*
2.3.20CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.3.20:*:*:*:*:*:*:*
2.3.21CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.3.21:*:*:*:*:*:*:*
2.3.22CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.3.22:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

1.9LOW

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 80th percentile among its peer group of 747 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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 (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-0:3.2.33-rt50.66.el6rt
View patch

Vendor Advisories (1)

redhatCVE-2012-3520Important

kernel: af_netlink: invalid handling of SCM_CREDENTIALS passing

Aug 21, 2012

References

git.kernel.org
lists.opensuse.org / opensuse-security-announce/2012-10/msg00005.html
lists.opensuse.org / opensuse-updates/2013-02/msg00018.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/50848
github.com / torvalds/linux/commit/e0e3cea46d31d23dc40df0a49a7a2c04fe8edfea
Exploit
kernel.org / pub/linux/kernel/v3.x/ChangeLog-3.2.30
openwall.com / lists/oss-security/2012/08/22/1
oracle.com / technetwork/topics/security/linuxbulletinjan2016-2867209.html
securityfocus.com / bid/55152
ubuntu.com / usn/USN-1599-1
ubuntu.com / usn/USN-1610-1