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low 2.1

CVE-2013-2141 json

The do_tkill function in kernel/signal.c in the Linux kernel before 3.8.9 does not initialize a certain data structure, which allows local…

published 13y ago modified 4mo ago also EUVD-2013-2106

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
0
none known

Summary

The do_tkill function in kernel/signal.c in the Linux kernel before 3.8.9 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel memory via a crafted application that makes a (1) tkill or (2) tgkill system call.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 3.9.4-1

debian advisories DEBIAN-CVE-2013-2141

  • kernel RHEL 6 2.6.32-431.1.2.el6
  • perf RHEL 6 2.6.32-431.1.2.el6
  • python-perf RHEL 6 2.6.32-431.1.2.el6
  • kernel-kdump RHEL 6 2.6.32-431.1.2.el6
  • kernel-firmware RHEL 6 2.6.32-431.1.2.el6
  • kernel-bootwrapper RHEL 6 2.6.32-431.1.2.el6
  • kernel-abi-whitelists RHEL 6 2.6.32-431.1.2.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-431.1.2.el6

red hat advisories RHSA-2013:1801RHSA-2013:1292RHSA-2013:1264

Is CVE-2013-2141 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2013-2141 updated cvss 2.1

Kernel: signal: information leak in tkill/tgkill

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-348.18.1.el5, kernel-PAE 2.6.18-348.18.1.el5, kernel-xen 2.6.18-348.18.1.el5, kernel-kdump 2.6.18-348.18.1.el5, kernel-debuginfo-common 2.6.18-348.18.1.el5
    fixed: vendor fix RHSA-2013:1292
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-431.1.2.el6, kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-kdump 2.6.32-431.1.2.el6, kernel-firmware 2.6.32-431.1.2.el6, kernel-bootwrapper 2.6.32-431.1.2.el6, +5 more Red Hat Enterprise Linux Desktop Optional (v. 6) perf 2.6.32-431.1.2.el6, kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-kdump 2.6.32-431.1.2.el6, kernel-firmware 2.6.32-431.1.2.el6, kernel-bootwrapper 2.6.32-431.1.2.el6, +5 more Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-431.1.2.el6, kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-kdump 2.6.32-431.1.2.el6, kernel-firmware 2.6.32-431.1.2.el6, kernel-bootwrapper 2.6.32-431.1.2.el6, +5 more Red Hat Enterprise Linux HPC Node Optional (v. 6) perf 2.6.32-431.1.2.el6, kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-kdump 2.6.32-431.1.2.el6, kernel-firmware 2.6.32-431.1.2.el6, kernel-bootwrapper 2.6.32-431.1.2.el6, +5 more Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-431.1.2.el6, kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-kdump 2.6.32-431.1.2.el6, kernel-firmware 2.6.32-431.1.2.el6, kernel-bootwrapper 2.6.32-431.1.2.el6, +5 more Red Hat Enterprise Linux Server Optional (v. 6) perf 2.6.32-431.1.2.el6, kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-kdump 2.6.32-431.1.2.el6, kernel-firmware 2.6.32-431.1.2.el6, kernel-bootwrapper 2.6.32-431.1.2.el6, +5 more
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-431.1.2.el6, kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-kdump 2.6.32-431.1.2.el6, kernel-firmware 2.6.32-431.1.2.el6, kernel-bootwrapper 2.6.32-431.1.2.el6, +5 more Red Hat Enterprise Linux Workstation Optional (v. 6) perf 2.6.32-431.1.2.el6, kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-kdump 2.6.32-431.1.2.el6, kernel-firmware 2.6.32-431.1.2.el6, kernel-bootwrapper 2.6.32-431.1.2.el6, +5 more
    fixed: vendor fix RHSA-2013:1801
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.6.11.5-rt37.55.el6rt, mrg-rt-release 3.6.11.5-rt37.55.el6rt, kernel-rt-trace 3.6.11.5-rt37.55.el6rt, kernel-rt-vanilla 3.6.11.5-rt37.55.el6rt, kernel-rt-firmware 3.6.11.5-rt37.55.el6rt, kernel-rt-debuginfo-common-x86_64 3.6.11.5-rt37.55.el6rt
    fixed: vendor fix RHSA-2013:1264

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

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/torvalds/linux/commit/b9e146d8eb3b9ecae5086d373b50fa0c1f3e7f0f referenced PoC, tagged "exploit" by a source, unverified

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-399 Resource Management Errors
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.