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Fencer Vulns
low 2.1

CVE-2009-2691 json

The mm_for_maps function in fs/proc/base.c in the Linux kernel 2.6.30.4 and earlier allows local users to read (1) maps and (2) smaps files…

published 2009-08-14 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-2684

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

The mm_for_maps function in fs/proc/base.c in the Linux kernel 2.6.30.4 and earlier allows local users to read (1) maps and (2) smaps files under proc/ via vectors related to ELF loading, a setuid process, and a race condition.

Patch / fix

  • kernel-rt enterprise mrg 1 2.6.24.7-137.el5rt
  • kernel-rt-trace enterprise mrg 1 2.6.24.7-137.el5rt
  • kernel-rt-vanilla enterprise mrg 1 2.6.24.7-137.el5rt
  • kernel-rt-debuginfo-common enterprise mrg 1 2.6.24.7-137.el5rt

red hat advisories RHSA-2009:1540

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-2691 updated cvss 2.1

kernel: /proc/$pid/maps visible during initial setuid ELF loading

  • Red Hat MRG Realtime for RHEL 5 Server kernel-rt 2.6.24.7-137.el5rt, kernel-rt-trace 2.6.24.7-137.el5rt, kernel-rt-vanilla 2.6.24.7-137.el5rt, kernel-rt-debuginfo-common 2.6.24.7-137.el5rt
    fixed: vendor fix RHSA-2009:1540

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.