CVE-2006-4342: redhat enterprise_linux Improper Locking
Vulnerability summary
CVE-2006-4342 is a medium (CVSS 5.5) Improper Locking vulnerability in redhat enterprise_linux. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 33.2% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1Timeline
- 17-10-2006PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
Description
The kernel in Red Hat Enterprise Linux 3, when running on SMP systems, allows local users to cause a denial of service (deadlock) by running the shmat function on an shm at the same time that shmctl is removing that shm (IPC_RMID), which prevents a spinlock from being unlocked.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
0.39%
Chance of exploitation in the next 30 days
Percentile
33%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.39% 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
1 foundExploit Reference (bugzilla.redhat.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat1 product
1 vendor · 1 product
References
7 links- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9649VDB EntrySignatureX Refsource OVALBroken Link