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Fencer Intel
medium 5.7

CVE-2013-6367 json

The apic_get_tmcct function in arch/x86/kvm/lapic.c in the KVM subsystem in the Linux kernel through 3.12.5 allows guest OS users to cause…

published 2013-12-14 12 y ago modified 2026-06-17 4 mo ago also EUVD-2013-6192

cvss
5.7
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

The apic_get_tmcct function in arch/x86/kvm/lapic.c in the KVM subsystem in the Linux kernel through 3.12.5 allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via crafted modifications of the TMICT value.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 3.12.5-1

debian advisories DEBIAN-CVE-2013-6367

  • kvm RHEL 5 VIRTUALIZATION 83-266.el5_10.1
  • kmod-kvm RHEL 5 VIRTUALIZATION 83-266.el5_10.1
  • kvm-tools RHEL 5 VIRTUALIZATION 83-266.el5_10.1
  • kvm-qemu-img RHEL 5 VIRTUALIZATION 83-266.el5_10.1
  • 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

red hat advisories RHSA-2014:0284RHSA-2014:0163RHSA-2013:1801RHSA-2013:1802

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-2013-6367 updated cvss 5.7

kvm: division by zero in apic_get_tmcct()

  • Red Hat Enterprise Linux 5 kvm
    affected: no fix available
  • Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.4) kernel 2.6.32-358.37.1.el6, python-perf 2.6.32-358.37.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.37.1.el6
    fixed: vendor fix RHSA-2014:0284
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-431.1.2.el6, kernel 2.6.32-431.1.2.el6, kernel-firmware 2.6.32-431.1.2.el6, kernel-abi-whitelists 2.6.32-431.1.2.el6, kernel-debuginfo-common-i686 2.6.32-431.1.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.1.2.el6
    fixed: vendor fix RHSA-2013:1801
  • Red Hat Enterprise Linux Desktop Multi OS (v. 5 client) kvm 83-266.el5_10.1, kmod-kvm 83-266.el5_10.1, kvm-tools 83-266.el5_10.1, kvm-qemu-img 83-266.el5_10.1
    fixed: vendor fix RHSA-2014:0163
  • Red Hat Enterprise Linux Desktop Optional (v. 6) kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-debuginfo-common-i686 2.6.32-431.1.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.1.2.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-431.1.2.el6, kernel 2.6.32-431.1.2.el6, kernel-firmware 2.6.32-431.1.2.el6, kernel-abi-whitelists 2.6.32-431.1.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.1.2.el6
    fixed: vendor fix RHSA-2013:1801
  • Red Hat Enterprise Linux HPC Node EUS (v. 6.4) perf 2.6.32-358.37.1.el6, kernel 2.6.32-358.37.1.el6, kernel-firmware 2.6.32-358.37.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.37.1.el6
    fixed: vendor fix RHSA-2014:0284
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.1.2.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-431.1.2.el6, kernel 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, kernel-abi-whitelists 2.6.32-431.1.2.el6, +4 more
    fixed: vendor fix RHSA-2013:1801
  • Red Hat Enterprise Linux Server EUS (v. 6.4) perf 2.6.32-358.37.1.el6, kernel 2.6.32-358.37.1.el6, kernel-kdump 2.6.32-358.37.1.el6, kernel-firmware 2.6.32-358.37.1.el6, kernel-bootwrapper 2.6.32-358.37.1.el6, kernel-debuginfo-common-i686 2.6.32-358.37.1.el6, +3 more
    fixed: vendor fix RHSA-2014:0284
show 6 more
  • Red Hat Enterprise Linux Server Optional (v. 6) kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-debuginfo-common-i686 2.6.32-431.1.2.el6, kernel-debuginfo-common-ppc64 2.6.32-431.1.2.el6, kernel-debuginfo-common-s390x 2.6.32-431.1.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.1.2.el6
    fixed: vendor fix RHSA-2013:1801
  • Red Hat Enterprise Linux Server Optional EUS (v. 6.4) kernel 2.6.32-358.37.1.el6, python-perf 2.6.32-358.37.1.el6, kernel-debuginfo-common-i686 2.6.32-358.37.1.el6, kernel-debuginfo-common-ppc64 2.6.32-358.37.1.el6, kernel-debuginfo-common-s390x 2.6.32-358.37.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.37.1.el6
    fixed: vendor fix RHSA-2014:0284
  • Red Hat Enterprise Linux Virtualization (v. 5 server) kvm 83-266.el5_10.1, kmod-kvm 83-266.el5_10.1, kvm-tools 83-266.el5_10.1, kvm-qemu-img 83-266.el5_10.1
    fixed: vendor fix RHSA-2014:0163
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-431.1.2.el6, kernel 2.6.32-431.1.2.el6, kernel-firmware 2.6.32-431.1.2.el6, kernel-abi-whitelists 2.6.32-431.1.2.el6, kernel-debuginfo-common-i686 2.6.32-431.1.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.1.2.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) kernel 2.6.32-431.1.2.el6, python-perf 2.6.32-431.1.2.el6, kernel-debuginfo-common-i686 2.6.32-431.1.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.1.2.el6
    fixed: vendor fix RHSA-2013:1801
  • Red Hat RHEV Hypervisor for RHEL-6 rhev-hypervisor6 6.5-20131204.0.3.2.el6_5
    fixed: vendor fix RHSA-2013:1802
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 7 perf, kernel, bpftool, python-perf, kernel-kdump, kernel-tools, +3 more Red Hat Enterprise Linux Desktop (v. 6) kernel-headers 2.6.32-431.1.2.el6 Red Hat Enterprise Linux HPC Node (v. 6) kernel-headers 2.6.32-431.1.2.el6 Red Hat Enterprise Linux HPC Node EUS (v. 6.4) kernel-headers 2.6.32-358.37.1.el6 Red Hat Enterprise Linux Server (v. 6) kernel-headers 2.6.32-431.1.2.el6
    +3 more products
    Red Hat Enterprise Linux Server EUS (v. 6.4) kernel-headers 2.6.32-358.37.1.el6 Red Hat Enterprise Linux Workstation (v. 6) kernel-headers 2.6.32-431.1.2.el6 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

1.45% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/torvalds/linux/commit/b963a22e6d1a266a67e9eecc88134713fd54775c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.7 AV:A/AC:M/Au:N/C:N/I:N/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.