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Fencer Intel
medium 4.9

CVE-2015-5307 json

The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host…

published 2015-11-16 10 y ago modified 2026-06-17 4 mo ago also EUVD-2015-5279

cvss
4.9
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 47%
public exploits
0
none known

Summary

The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c.

Patch / fix

  • xen Debian 14, Debian 13, Debian 12 4.8.0~rc3-1
  • linux Debian 14, Debian 13, Debian 12 4.2.6-1

debian advisories DEBIAN-CVE-2015-5307

  • xen Ubuntu 14.04 LTS 4.4.2-0ubuntu0.14.04.3
  • xen Ubuntu 16.04 LTS 4.5.1-0ubuntu2
  • linux Ubuntu 14.04 LTS 3.13.0-68.111
  • virtualbox Ubuntu 14.04 LTS 4.3.36-dfsg-1+deb8u1ubuntu1.14.04.1
  • linux-lts-wily Ubuntu 14.04 LTS 4.2.0-18.22~14.04.1
  • linux-lts-vivid Ubuntu 14.04 LTS 3.19.0-33.38~14.04.1
  • linux-lts-utopic Ubuntu 14.04 LTS 3.16.0-53.72~14.04.1

ubuntu advisories UBUNTU-CVE-2015-5307

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 7 3.10.0-327.3.1.el7
  • perf RHEL 7 3.10.0-327.3.1.el7
  • python-perf RHEL 7 3.10.0-327.3.1.el7
  • kernel-kdump RHEL 7 3.10.0-327.3.1.el7
  • kernel-tools RHEL 7 3.10.0-327.3.1.el7
  • kernel-tools-libs RHEL 7 3.10.0-327.3.1.el7
  • kernel-bootwrapper RHEL 7 3.10.0-327.3.1.el7
  • kernel-abi-whitelists RHEL 7 3.10.0-327.3.1.el7

red hat advisories RHSA-2016:0004RHSA-2015:2645RHSA-2016:0024RHSA-2015:2552RHSA-2015:2636RHSA-2015:2587

  • kernel-rt SLE Real Time 11 SP3 3.0.101.rt130-0.33.44.2
  • kernel-syms-rt SLE Real Time 11 SP3 3.0.101.rt130-0.33.44.1
  • kernel-rt_trace SLE Real Time 11 SP3 3.0.101.rt130-0.33.44.2
  • kernel-source-rt SLE Real Time 11 SP3 3.0.101.rt130-0.33.44.2
  • kernel-rt SLE Real Time 11 SP4 3.0.101.rt130-48.1
  • kernel-syms-rt SLE Real Time 11 SP4 3.0.101.rt130-48.1
  • kernel-rt_trace SLE Real Time 11 SP4 3.0.101.rt130-48.1
  • kernel-source-rt SLE Real Time 11 SP4 3.0.101.rt130-48.1

suse advisories SUSE-SU-2016:2074-1SUSE-SU-2016:0354-1SUSE-SU-2015:2350-1SUSE-SU-2015:2339-1SUSE-SU-2015:2338-1SUSE-SU-2015:2328-1

  • xen openSUSE Tumbleweed 4.7.0_12-1.3

opensuse advisories openSUSE-SU-2024:10196-1

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-2015-5307 updated cvss 5.2

virt: guest to host DoS by triggering an infinite loop in microcode via #AC exception

  • Red Hat Enterprise Linux 5 kvm, xen
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-327.3.1.el7, kernel 3.10.0-327.3.1.el7, python-perf 3.10.0-327.3.1.el7, kernel-tools 3.10.0-327.3.1.el7, kernel-tools-libs 3.10.0-327.3.1.el7, kernel-abi-whitelists 3.10.0-327.3.1.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-327.3.1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-327.3.1.el7, kernel 3.10.0-327.3.1.el7, python-perf 3.10.0-327.3.1.el7, kernel-tools 3.10.0-327.3.1.el7, kernel-tools-libs 3.10.0-327.3.1.el7, kernel-abi-whitelists 3.10.0-327.3.1.el7, +1 more
    fixed: vendor fix RHSA-2015:2552
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.1) perf 3.10.0-229.24.2.el7, kernel 3.10.0-229.24.2.el7, kernel-tools 3.10.0-229.24.2.el7, kernel-tools-libs 3.10.0-229.24.2.el7, kernel-abi-whitelists 3.10.0-229.24.2.el7, kernel-debuginfo-common-x86_64 3.10.0-229.24.2.el7
    fixed: vendor fix RHSA-2015:2587
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-327.3.1.el7
    fixed: vendor fix RHSA-2015:2552
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1) python-perf 3.10.0-229.24.2.el7, kernel-debuginfo-common-x86_64 3.10.0-229.24.2.el7
    fixed: vendor fix RHSA-2015:2587
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-573.12.1.el6, kernel 2.6.32-573.12.1.el6, kernel-firmware 2.6.32-573.12.1.el6, kernel-abi-whitelists 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-573.12.1.el6, kernel 2.6.32-573.12.1.el6, kernel-firmware 2.6.32-573.12.1.el6, kernel-abi-whitelists 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6
    fixed: vendor fix RHSA-2015:2636
  • Red Hat Enterprise Linux HPC Node EUS (v. 6.6) perf 2.6.32-504.40.1.el6, kernel 2.6.32-504.40.1.el6, kernel-firmware 2.6.32-504.40.1.el6, kernel-abi-whitelists 2.6.32-504.40.1.el6, kernel-debuginfo-common-i686 2.6.32-504.40.1.el6, kernel-debuginfo-common-x86_64 2.6.32-504.40.1.el6
    fixed: vendor fix RHSA-2016:0024
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6
    fixed: vendor fix RHSA-2015:2636
show 20 more
  • Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.6) python-perf 2.6.32-504.40.1.el6, kernel-debuginfo-common-x86_64 2.6.32-504.40.1.el6
    fixed: vendor fix RHSA-2016:0024
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-573.12.1.el6, kernel 2.6.32-573.12.1.el6, kernel-kdump 2.6.32-573.12.1.el6, kernel-firmware 2.6.32-573.12.1.el6, kernel-bootwrapper 2.6.32-573.12.1.el6, kernel-abi-whitelists 2.6.32-573.12.1.el6, +4 more
    fixed: vendor fix RHSA-2015:2636
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-327.3.1.el7, kernel 3.10.0-327.3.1.el7, python-perf 3.10.0-327.3.1.el7, kernel-kdump 3.10.0-327.3.1.el7, kernel-tools 3.10.0-327.3.1.el7, kernel-tools-libs 3.10.0-327.3.1.el7, +6 more
    fixed: vendor fix RHSA-2015:2552
  • Red Hat Enterprise Linux Server AUS (v. 6.2) perf 2.6.32-220.65.1.el6, kernel 2.6.32-220.65.1.el6, kernel-firmware 2.6.32-220.65.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.65.1.el6
    fixed: vendor fix RHSA-2016:0046
  • Red Hat Enterprise Linux Server AUS (v. 6.4) perf 2.6.32-358.69.1.el6, kernel 2.6.32-358.69.1.el6, kernel-firmware 2.6.32-358.69.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.69.1.el6
    fixed: vendor fix RHSA-2016:0004
  • Red Hat Enterprise Linux Server AUS (v. 6.5) perf 2.6.32-431.68.1.el6, kernel 2.6.32-431.68.1.el6, kernel-firmware 2.6.32-431.68.1.el6, kernel-abi-whitelists 2.6.32-431.68.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.68.1.el6
    fixed: vendor fix RHSA-2015:2645
  • Red Hat Enterprise Linux Server EUS (v. 6.6) perf 2.6.32-504.40.1.el6, kernel 2.6.32-504.40.1.el6, kernel-kdump 2.6.32-504.40.1.el6, kernel-firmware 2.6.32-504.40.1.el6, kernel-bootwrapper 2.6.32-504.40.1.el6, kernel-abi-whitelists 2.6.32-504.40.1.el6, +4 more
    fixed: vendor fix RHSA-2016:0024
  • Red Hat Enterprise Linux Server EUS (v. 7.1) perf 3.10.0-229.24.2.el7, kernel 3.10.0-229.24.2.el7, perf 3.10.0-229.24.2.ael7b, kernel 3.10.0-229.24.2.ael7b, kernel-kdump 3.10.0-229.24.2.el7, kernel-tools 3.10.0-229.24.2.el7, +11 more
    fixed: vendor fix RHSA-2015:2587
  • Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-ppc64 2.6.32-573.12.1.el6, kernel-debuginfo-common-s390x 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6
    fixed: vendor fix RHSA-2015:2636
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-327.3.1.el7, kernel-debuginfo-common-x86_64 3.10.0-327.3.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-327.3.1.el7
    fixed: vendor fix RHSA-2015:2552
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.2) kernel 2.6.32-220.65.1.el6, python-perf 2.6.32-220.65.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.65.1.el6
    fixed: vendor fix RHSA-2016:0046
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.4) kernel 2.6.32-358.69.1.el6, python-perf 2.6.32-358.69.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.69.1.el6
    fixed: vendor fix RHSA-2016:0004
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.5) kernel 2.6.32-431.68.1.el6, python-perf 2.6.32-431.68.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.68.1.el6
    fixed: vendor fix RHSA-2015:2645
  • Red Hat Enterprise Linux Server Optional EUS (v. 6.6) python-perf 2.6.32-504.40.1.el6, kernel-debuginfo-common-i686 2.6.32-504.40.1.el6, kernel-debuginfo-common-ppc64 2.6.32-504.40.1.el6, kernel-debuginfo-common-s390x 2.6.32-504.40.1.el6, kernel-debuginfo-common-x86_64 2.6.32-504.40.1.el6
    fixed: vendor fix RHSA-2016:0024
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.1) python-perf 3.10.0-229.24.2.el7, python-perf 3.10.0-229.24.2.ael7b, kernel-debuginfo-common-ppc64 3.10.0-229.24.2.el7, kernel-debuginfo-common-s390x 3.10.0-229.24.2.el7, kernel-debuginfo-common-x86_64 3.10.0-229.24.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-229.24.2.ael7b
    fixed: vendor fix RHSA-2015:2587
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-573.12.1.el6, kernel 2.6.32-573.12.1.el6, kernel-firmware 2.6.32-573.12.1.el6, kernel-abi-whitelists 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6
    fixed: vendor fix RHSA-2015:2636
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-327.3.1.el7, kernel 3.10.0-327.3.1.el7, python-perf 3.10.0-327.3.1.el7, kernel-tools 3.10.0-327.3.1.el7, kernel-tools-libs 3.10.0-327.3.1.el7, kernel-abi-whitelists 3.10.0-327.3.1.el7, +1 more
    fixed: vendor fix RHSA-2015:2552
  • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf 2.6.32-573.12.1.el6, kernel-debuginfo-common-i686 2.6.32-573.12.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.12.1.el6
    fixed: vendor fix RHSA-2015:2636
  • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-327.3.1.el7
    fixed: vendor fix RHSA-2015:2552
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 7 kernel-rt, kernel-rt-kvm, kernel-rt-trace, kernel-rt-debug-kvm, kernel-rt-trace-kvm 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

0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

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.