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Fencer Intel
low 1.9

CVE-2012-6544 json

The Bluetooth protocol stack in the Linux kernel before 3.6 does not properly initialize certain structures, which allows local users to ob…

published 2013-03-14 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-6392

cvss
1.9
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 31%
public exploits
0
none known

Summary

The Bluetooth protocol stack in the Linux kernel before 3.6 does not properly initialize certain structures, which allows local users to obtain sensitive information from kernel stack memory via a crafted application that targets the (1) L2CAP or (2) HCI implementation.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 3.2.30-1

debian advisories DEBIAN-CVE-2012-6544

  • kernel openstack 3 2.6.32-358.118.1.openstack.el6
  • perf openstack 3 2.6.32-358.118.1.openstack.el6
  • python-perf openstack 3 2.6.32-358.118.1.openstack.el6
  • kernel-firmware openstack 3 2.6.32-358.118.1.openstack.el6
  • kernel-debuginfo-common-x86_64 openstack 3 2.6.32-358.118.1.openstack.el6
  • kernel RHEL 6 2.6.32-358.18.1.el6
  • perf RHEL 6 2.6.32-358.18.1.el6
  • python-perf RHEL 6 2.6.32-358.18.1.el6

red hat advisories RHSA-2013:1195RHSA-2013:1173RHSA-2013:1034

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-2012-6544 updated cvss 2.1

Kernel: Bluetooth: HCI & L2CAP information leaks

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-348.12.1.el5, kernel-PAE 2.6.18-348.12.1.el5, kernel-xen 2.6.18-348.12.1.el5, kernel-kdump 2.6.18-348.12.1.el5, kernel-debuginfo-common 2.6.18-348.12.1.el5
    fixed: vendor fix RHSA-2013:1034
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-358.18.1.el6, kernel 2.6.32-358.18.1.el6, python-perf 2.6.32-358.18.1.el6, kernel-kdump 2.6.32-358.18.1.el6, kernel-firmware 2.6.32-358.18.1.el6, kernel-bootwrapper 2.6.32-358.18.1.el6, +4 more Red Hat Enterprise Linux Desktop Optional (v. 6) perf 2.6.32-358.18.1.el6, kernel 2.6.32-358.18.1.el6, python-perf 2.6.32-358.18.1.el6, kernel-kdump 2.6.32-358.18.1.el6, kernel-firmware 2.6.32-358.18.1.el6, kernel-bootwrapper 2.6.32-358.18.1.el6, +4 more Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-358.18.1.el6, kernel 2.6.32-358.18.1.el6, python-perf 2.6.32-358.18.1.el6, kernel-kdump 2.6.32-358.18.1.el6, kernel-firmware 2.6.32-358.18.1.el6, kernel-bootwrapper 2.6.32-358.18.1.el6, +4 more Red Hat Enterprise Linux HPC Node Optional (v. 6) perf 2.6.32-358.18.1.el6, kernel 2.6.32-358.18.1.el6, python-perf 2.6.32-358.18.1.el6, kernel-kdump 2.6.32-358.18.1.el6, kernel-firmware 2.6.32-358.18.1.el6, kernel-bootwrapper 2.6.32-358.18.1.el6, +4 more
    fixed: vendor fix RHSA-2013:1173
  • Red Hat Enterprise Linux OpenStack Platform 3.0 perf 2.6.32-358.118.1.openstack.el6, kernel 2.6.32-358.118.1.openstack.el6, python-perf 2.6.32-358.118.1.openstack.el6, kernel-firmware 2.6.32-358.118.1.openstack.el6, kernel-debuginfo-common-x86_64 2.6.32-358.118.1.openstack.el6
    fixed: vendor fix RHSA-2013:1195
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-358.18.1.el6, kernel 2.6.32-358.18.1.el6, python-perf 2.6.32-358.18.1.el6, kernel-kdump 2.6.32-358.18.1.el6, kernel-firmware 2.6.32-358.18.1.el6, kernel-bootwrapper 2.6.32-358.18.1.el6, +4 more Red Hat Enterprise Linux Server Optional (v. 6) perf 2.6.32-358.18.1.el6, kernel 2.6.32-358.18.1.el6, python-perf 2.6.32-358.18.1.el6, kernel-kdump 2.6.32-358.18.1.el6, kernel-firmware 2.6.32-358.18.1.el6, kernel-bootwrapper 2.6.32-358.18.1.el6, +4 more Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-358.18.1.el6, kernel 2.6.32-358.18.1.el6, python-perf 2.6.32-358.18.1.el6, kernel-kdump 2.6.32-358.18.1.el6, kernel-firmware 2.6.32-358.18.1.el6, kernel-bootwrapper 2.6.32-358.18.1.el6, +4 more Red Hat Enterprise Linux Workstation Optional (v. 6) perf 2.6.32-358.18.1.el6, kernel 2.6.32-358.18.1.el6, python-perf 2.6.32-358.18.1.el6, kernel-kdump 2.6.32-358.18.1.el6, kernel-firmware 2.6.32-358.18.1.el6, kernel-bootwrapper 2.6.32-358.18.1.el6, +4 more
    fixed: vendor fix RHSA-2013:1173
  • Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

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

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 1.9 AV:L/AC:M/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 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.