CVE-2012-2123: linux linux_kernel
Vulnerability summary
CVE-2012-2123 is a high (CVSS 7.2) vulnerability in linux linux_kernel. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 34.5% of scored vulnerabilities.
Not severe (CVSS 7.2, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3Timeline
- 17-05-2012PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended personality restrictions via a crafted application, as demonstrated by an attack that uses a parent process to disable ASLR.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
0.40%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
Decrease -0.01 pp
From 0.42% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication (CVSS vector). Other conditions: not stated in public data.
Ubuntu14 products
- linux< 3.11.0-12.19 | < 4.2.0-16.19
- linux-aws< 4.4.0-1002.2 | < 4.4.0-1001.10
- linux-flo< 3.4.0-1.3 | < 3.4.0-5.22
- linux-gke< 4.4.0-1003.3
- linux-goldfish< 3.4.0-1.9 | < 3.4.0-4.27
Linux1 product
- linux_kernel< 3.0.29 | ≥ 3.1, < 3.2.16 | ≥ 3.3, < 3.3.3
2 vendors · 15 products
References
23 links- rhn.redhat.com/errata/RHSA-2012-0743.htmlVendor AdvisoryX Refsource REDHATThird Party AdvisoryVDB Entry
- rhn.redhat.com/errata/RHSA-2012-0670.htmlVendor AdvisoryX Refsource REDHATThird Party AdvisoryVDB Entry
- www.openwall.com/lists/oss-security/2012/04/20/6Mailing ListX Refsource MLISTThird Party AdvisoryREPORT
- github.com/torvalds/linux/commit/d52fc5dde171f030170a6cb78034d166b13c9445X Refsource CONFIRMThird Party Advisory