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CVE-2012-2123

21
FAUCET Score

CVE-2012-2123 describes a privilege escalation vulnerability in the Linux kernel (before version 3.3.3), specifically within the cap_bprm_set_creds function. This flaw allows local users to bypass personality restrictions, such as Address Space Layout Randomization (ASLR), by manipulating file system capabilities through a crafted application. With a CVSS score of 7.2, this vulnerability is considered high severity, indicating a low attack complexity and complete compromise of confidentiality, integrity, and availability. Despite its severity, 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
< 3.0.29CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.1, < 3.2.16CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.3, < 3.3.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 49th percentile among its peer group of 3,237 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 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 (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-220.23.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-0:3.0.30-rt50.62.el6rt
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2012-2123Important

kernel: fcaps: clear the same personality flags as suid when fcaps are used

Apr 17, 2012

References

git.kernel.org
Broken Link
rhn.redhat.com / errata/RHSA-2012-0670.html
Third Party AdvisoryVDB Entry
rhn.redhat.com / errata/RHSA-2012-0743.html
Third Party AdvisoryVDB Entry
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
exchange.xforce.ibmcloud.com / vulnerabilities/75043
VDB Entry
github.com / torvalds/linux/commit/d52fc5dde171f030170a6cb78034d166b13c9445
Third Party Advisory
debian.org / security/2012/dsa-2469
Third Party Advisory
kernel.org / pub/linux/kernel/v3.x/ChangeLog-3.3.3
Vendor Advisory
openwall.com / lists/oss-security/2012/04/20/6
Mailing ListThird Party Advisory
securityfocus.com / bid/53166
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry