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Fencer Intel
low 3.6

CVE-2011-1182 json

kernel/signal.c in the Linux kernel before 2.6.39 allows local users to spoof the uid and pid of a signal sender via a sigqueueinfo system…

published 2013-03-01 13 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1192

cvss
3.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

Summary

kernel/signal.c in the Linux kernel before 2.6.39 allows local users to spoof the uid and pid of a signal sender via a sigqueueinfo system call.

Patch / fix

  • linux linux_kernel 2.6.39
  • kernel RHEL 6 2.6.32-131.12.1.el6
  • perf RHEL 6 2.6.32-131.12.1.el6
  • kernel-kdump RHEL 6 2.6.32-131.12.1.el6
  • kernel-firmware RHEL 6 2.6.32-131.12.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-131.12.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-131.12.1.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-131.12.1.el6
  • kernel-debuginfo-common-s390x RHEL 6 2.6.32-131.12.1.el6

red hat advisories RHSA-2011:1189RHSA-2011:0927RHSA-2011:0883

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-2011-1182 updated cvss 3.6

kernel signal spoofing issue

  • Red Hat Enterprise MRG 1 kernel-rt
    affected: no fix available
  • Red Hat Enterprise Linux (v. 5.6.z server) kernel 2.6.18-238.19.1.el5, kernel-PAE 2.6.18-238.19.1.el5, kernel-xen 2.6.18-238.19.1.el5, kernel-kdump 2.6.18-238.19.1.el5, kernel-debuginfo-common 2.6.18-238.19.1.el5
    fixed: vendor fix RHSA-2011:0927
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-131.12.1.el6, kernel 2.6.32-131.12.1.el6, kernel-kdump 2.6.32-131.12.1.el6, kernel-firmware 2.6.32-131.12.1.el6, kernel-bootwrapper 2.6.32-131.12.1.el6, kernel-debuginfo-common-i686 2.6.32-131.12.1.el6, +3 more
    fixed: vendor fix RHSA-2011:1189
  • 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 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

0.48% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/torvalds/linux/commit/da48524eb20662618854bb3df2db01fc65f3070c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 3.6 AV:L/AC:L/Au:N/C:N/I:P/A:P

Classification

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.