2.1

CVE-2011-2495: linux linux_kernel

Modified
Published 13-06-2012Last modified 06-08-2024

Vulnerability summary

CVE-2011-2495 is a low (CVSS 2.1) vulnerability in linux linux_kernel. EPSS estimates a 0.48% chance of exploitation in the next 30 days, higher than 41.7% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 2.1, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
2.1/10
010
Low · v2.0 (NVD)
EPSS score
0.48%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 6
DSA-2303-1DSA-2310-1RHSA-2011:1189RHSA-2011:1212RHSA-2011:1253RHSA-2011:1813

Timeline

  1. 13-06-2012
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

fs/proc/base.c in the Linux kernel before 2.6.39.4 does not properly restrict access to /proc/#####/io files, which allows local users to obtain sensitive I/O statistics by polling a file, as demonstrated by discovering the length of another user's password.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.48%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.48% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Linux

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, no authentication (CVSS vector). Other conditions: not stated in public data.

Linux1 product
  • linux_kernel≤ 2.6.39.3 | 2.6.39 | 2.6.39:rc1 | 2.6.39:rc2 | 2.6.39:rc3 | 2.6.39:rc4 | 2.6.39:rc5 | 2.6.39:rc6 | 2.6.39:rc7 | 2.6.39.1 | 2.6.39.2

1 vendor · 1 product

References

6 links