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Fencer Intel
medium 4.9

CVE-2011-1082 json

fs/eventpoll.c in the Linux kernel before 2.6.38 places epoll file descriptors within other epoll data structures without properly checking…

published 2011-04-03 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1097

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
1
Exploit-DB

Summary

fs/eventpoll.c in the Linux kernel before 2.6.38 places epoll file descriptors within other epoll data structures without properly checking for (1) closed loops or (2) deep chains, which allows local users to cause a denial of service (deadlock or stack memory consumption) via a crafted application that makes epoll_create and epoll_ctl system calls.

Patch / fix

  • linux linux_kernel 2.6.38
  • kernel RHEL 6 2.6.32-131.0.15.el6
  • perf RHEL 6 2.6.32-131.0.15.el6
  • kernel-kdump RHEL 6 2.6.32-131.0.15.el6
  • kernel-firmware RHEL 6 2.6.32-131.0.15.el6
  • kernel-bootwrapper RHEL 6 2.6.32-131.0.15.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-131.0.15.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-131.0.15.el6
  • kernel-debuginfo-common-s390x RHEL 6 2.6.32-131.0.15.el6

red hat advisories RHSA-2011:0542RHSA-2011:0883RHSA-2011:0500

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-2011-1082 updated cvss 4.9

kernel: potential kernel deadlock when creating circular epoll file structures

  • Red Hat Enterprise Linux 4 kernel Red Hat Enterprise Linux 5 kernel
    affected: no fix available
  • Red Hat MRG Realtime for RHEL 5 Server perf 2.6.33.9-rt31.64.el5rt, kernel-rt 2.6.33.9-rt31.64.el5rt, kernel-rt-trace 2.6.33.9-rt31.64.el5rt, kernel-rt-vanilla 2.6.33.9-rt31.64.el5rt, kernel-rt-debuginfo-common 2.6.33.9-rt31.64.el5rt
    fixed: vendor fix RHSA-2011:0500
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-debuginfo-common-i686 2.6.32-131.0.15.el6, kernel-debuginfo-common-x86_64 2.6.32-131.0.15.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-debuginfo-common-x86_64 2.6.32-131.0.15.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-kdump 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-bootwrapper 2.6.32-131.0.15.el6, kernel-debuginfo-common-i686 2.6.32-131.0.15.el6, +3 more
    fixed: vendor fix RHSA-2011:0542
  • Red Hat Enterprise Linux Server EUS (v. 6.0) perf 2.6.32-71.31.1.el6, kernel 2.6.32-71.31.1.el6, kernel-kdump 2.6.32-71.31.1.el6, kernel-firmware 2.6.32-71.31.1.el6, kernel-bootwrapper 2.6.32-71.31.1.el6, kernel-debuginfo-common-i686 2.6.32-71.31.1.el6, +3 more
    fixed: vendor fix RHSA-2011:0883
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-debuginfo-common-i686 2.6.32-131.0.15.el6, kernel-debuginfo-common-x86_64 2.6.32-131.0.15.el6
    fixed: vendor fix RHSA-2011:0542

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

Timeline

  1. First public exploit (EDB-35404)
  2. Published

Exploit prediction

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-35404 Linux Kernel 2.6.x - fs/eventpoll.c epoll Data Structure File Descriptor Local Denial of Service dos, 2011-03-02

CVSS scores

assigned by version score vector
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
Technology feeds

References

Sources

Fencer Intel 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.