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Fencer Intel
high 7.8

CVE-2012-6689 json

The netlink_sendmsg function in net/netlink/af_netlink.c in the Linux kernel before 3.5.5 does not validate the dst_pid field, which allows…

published 2016-05-02 10 y ago modified 2026-06-16 4 mo ago also EUVD-2012-6531

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits
0
none known

Summary

The netlink_sendmsg function in net/netlink/af_netlink.c in the Linux kernel before 3.5.5 does not validate the dst_pid field, which allows local users to have an unspecified impact by spoofing Netlink messages.

Patch / fix

  • linux linux_kernel 3.0.44, 3.2.30, 3.4.12, 3.5.5
  • linux Debian 14, Debian 13, Debian 12 3.6.4-1

debian advisories DEBIAN-CVE-2012-6689

  • kernel RHEL 6 2.6.32-504.el6
  • perf RHEL 6 2.6.32-504.el6
  • python-perf RHEL 6 2.6.32-504.el6
  • kernel-kdump RHEL 6 2.6.32-504.el6
  • kernel-firmware RHEL 6 2.6.32-504.el6
  • kernel-bootwrapper RHEL 6 2.6.32-504.el6
  • kernel-abi-whitelists RHEL 6 2.6.32-504.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-504.el6

red hat advisories RHSA-2014:1392

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-2012-6689 updated cvss 4.4

libmnl: incorrect validation of netlink message origin allows attackers to spoof netlink messages

  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, python-perf 2.6.32-504.el6, kernel-kdump 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-bootwrapper 2.6.32-504.el6, +5 more Red Hat Enterprise Linux Desktop Optional (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, python-perf 2.6.32-504.el6, kernel-kdump 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-bootwrapper 2.6.32-504.el6, +5 more Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, python-perf 2.6.32-504.el6, kernel-kdump 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-bootwrapper 2.6.32-504.el6, +5 more Red Hat Enterprise Linux HPC Node Optional (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, python-perf 2.6.32-504.el6, kernel-kdump 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-bootwrapper 2.6.32-504.el6, +5 more Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, python-perf 2.6.32-504.el6, kernel-kdump 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-bootwrapper 2.6.32-504.el6, +5 more Red Hat Enterprise Linux Server Optional (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, python-perf 2.6.32-504.el6, kernel-kdump 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-bootwrapper 2.6.32-504.el6, +5 more
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, python-perf 2.6.32-504.el6, kernel-kdump 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-bootwrapper 2.6.32-504.el6, +5 more Red Hat Enterprise Linux Workstation Optional (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, python-perf 2.6.32-504.el6, kernel-kdump 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-bootwrapper 2.6.32-504.el6, +5 more
    fixed: vendor fix RHSA-2014:1392

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

0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
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.