CVE-2011-1020: linux linux_kernel
Vulnerability summary
CVE-2011-1020 is a medium (CVSS 4.6) vulnerability in linux linux_kernel. EPSS estimates a 0.92% chance of exploitation in the next 30 days, higher than 60.4% of scored vulnerabilities. 4 public exploits are recorded.
Not severe (CVSS 4.6, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 1Timeline
- 28-02-2011PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
The proc filesystem implementation in the Linux kernel 2.6.37 and earlier does not restrict access to the /proc directory tree of a process after this process performs an exec of a setuid program, which allows local users to obtain sensitive information or cause a denial of service via open, lseek, read, and write system calls.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
0.92%
Chance of exploitation in the next 30 days
Percentile
60%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.92% 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
4 foundExploit Reference (lkml.org)
Maturity: unknown
Exploit Reference (seclists.org)
Maturity: unknown
Exploit Reference (halfdog.net)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication (CVSS vector). Other conditions: not stated in public data.
Linux1 product
- linux_kernel< 2.6.37
1 vendor · 1 product
References
15 linksShow all 15 references
- www.halfdog.net/Security/2011/SuidBinariesAndProcInterface/X Refsource MISCExploitThird Party Advisory