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Fencer Intel
high 8.0

CVE-2018-1087 json

kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in th…

published 2018-05-15 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11737

cvss
8.0
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel's KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 4.15.17-1

debian advisories DEBIAN-CVE-2018-1087

  • linux Ubuntu 14.04 LTS 3.13.0-147.196
  • linux Ubuntu 16.04 LTS 4.4.0-124.148
  • linux-aws Ubuntu 14.04 LTS 4.4.0-1019.19
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1057.66
  • linux-gcp Ubuntu 16.04 LTS 4.13.0-1015.19
  • linux-hwe Ubuntu 16.04 LTS 4.13.0-41.46~16.04.1
  • linux-kvm Ubuntu 16.04 LTS 4.4.0-1023.28
  • linux-oem Ubuntu 16.04 LTS 4.13.0-1026.29

ubuntu advisories UBUNTU-CVE-2018-1087

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

  • redhat-virtualization-host RHEL 7 3.6-20180521.0.el7_3
  • redhat-virtualization-host-image-update RHEL 7 3.6-20180521.0.el7_3
  • rhev-hypervisor7 RHEL 6 7.3-20180521.1.el6ev
  • rhev-hypervisor7 RHEL 7 7.3-20180521.1.el7ev
  • kernel RHEL 7 3.10.0-862.2.3.el7
  • perf RHEL 7 3.10.0-862.2.3.el7
  • python-perf RHEL 7 3.10.0-862.2.3.el7
  • kernel-kdump RHEL 7 3.10.0-862.2.3.el7

red hat advisories RHSA-2018:1710RHSA-2018:1711RHSA-2018:1318RHSA-2018:1347RHSA-2018:1348RHSA-2018:1345

  • kernel-syms SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 4.4.121-92.73.1
  • kernel-source SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 4.4.121-92.73.1
  • kernel-default SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 4.4.121-92.73.1
  • kgraft-patch-SLE12-SP2_Update_21 SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 1-3.3.1
  • kernel-ec2 SLE Module for Public Cloud 12 3.12.74-60.64.88.1
  • kernel-xen SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.88.1
  • kernel-syms SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.88.1
  • kernel-source SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.88.1

suse advisories SUSE-SU-2018:1173-2SUSE-SU-2018:1636-1SUSE-SU-2018:1644-1SUSE-SU-2018:1639-1SUSE-SU-2018:1645-1SUSE-SU-2018:1640-1

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-2018-1087 updated cvss 8.0

Kernel: KVM: error in exception handling leads to wrong debug stack value

  • Red Hat Enterprise Virtualization 3 rhev-hypervisor-ng Red Hat Virtualization 4 rhev-hypervisor-ng
    affected: no fix available
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-862.2.3.el7, kernel 3.10.0-862.2.3.el7, python-perf 3.10.0-862.2.3.el7, kernel-tools 3.10.0-862.2.3.el7, kernel-tools-libs 3.10.0-862.2.3.el7, kernel-abi-whitelists 3.10.0-862.2.3.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.2.3.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-862.2.3.el7, kernel 3.10.0-862.2.3.el7, python-perf 3.10.0-862.2.3.el7, kernel-tools 3.10.0-862.2.3.el7, kernel-tools-libs 3.10.0-862.2.3.el7, kernel-abi-whitelists 3.10.0-862.2.3.el7, +1 more
    fixed: vendor fix RHSA-2018:1318
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.3) perf 3.10.0-514.48.3.el7, kernel 3.10.0-514.48.3.el7, python-perf 3.10.0-514.48.3.el7, kernel-tools 3.10.0-514.48.3.el7, kernel-tools-libs 3.10.0-514.48.3.el7, kernel-abi-whitelists 3.10.0-514.48.3.el7, +1 more
    fixed: vendor fix RHSA-2018:1348
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) perf 3.10.0-693.25.4.el7, kernel 3.10.0-693.25.4.el7, python-perf 3.10.0-693.25.4.el7, kernel-tools 3.10.0-693.25.4.el7, kernel-tools-libs 3.10.0-693.25.4.el7, kernel-abi-whitelists 3.10.0-693.25.4.el7, +1 more
    fixed: vendor fix RHSA-2018:1345
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.2.3.el7
    fixed: vendor fix RHSA-2018:1318
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) kernel-debuginfo-common-x86_64 3.10.0-514.48.3.el7
    fixed: vendor fix RHSA-2018:1348
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.25.4.el7
    fixed: vendor fix RHSA-2018:1345
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 3.10.0-862.2.3.el7, kernel 3.10.0-862.2.3.el7, python-perf 3.10.0-862.2.3.el7, kernel-kdump 3.10.0-862.2.3.el7, kernel-tools 3.10.0-862.2.3.el7, kernel-tools-libs 3.10.0-862.2.3.el7, +4 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-ppc64le 3.10.0-862.2.3.el7
    fixed: vendor fix RHSA-2018:1318
show 16 more
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-862.2.3.rt56.806.el7, kernel-rt-kvm 3.10.0-862.2.3.rt56.806.el7, kernel-rt-trace 3.10.0-862.2.3.rt56.806.el7, kernel-rt-debug-kvm 3.10.0-862.2.3.rt56.806.el7, kernel-rt-trace-kvm 3.10.0-862.2.3.rt56.806.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-862.2.3.rt56.806.el7 Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-862.2.3.rt56.806.el7, kernel-rt-trace 3.10.0-862.2.3.rt56.806.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-862.2.3.rt56.806.el7
    fixed: vendor fix RHSA-2018:1355
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-862.2.3.el7, kernel 3.10.0-862.2.3.el7, python-perf 3.10.0-862.2.3.el7, kernel-kdump 3.10.0-862.2.3.el7, kernel-tools 3.10.0-862.2.3.el7, kernel-tools-libs 3.10.0-862.2.3.el7, +6 more
    fixed: vendor fix RHSA-2018:1318
  • Red Hat Enterprise Linux Server AUS (v. 7.2) perf 3.10.0-327.66.3.el7, kernel 3.10.0-327.66.3.el7, python-perf 3.10.0-327.66.3.el7, kernel-tools 3.10.0-327.66.3.el7, kernel-tools-libs 3.10.0-327.66.3.el7, kernel-abi-whitelists 3.10.0-327.66.3.el7, +1 more Red Hat Enterprise Linux Server E4S (v. 7.2) perf 3.10.0-327.66.3.el7, kernel 3.10.0-327.66.3.el7, python-perf 3.10.0-327.66.3.el7, kernel-tools 3.10.0-327.66.3.el7, kernel-tools-libs 3.10.0-327.66.3.el7, kernel-abi-whitelists 3.10.0-327.66.3.el7, +1 more
    fixed: vendor fix RHSA-2018:1347
  • Red Hat Enterprise Linux Server EUS (v. 7.3) perf 3.10.0-514.48.3.el7, kernel 3.10.0-514.48.3.el7, python-perf 3.10.0-514.48.3.el7, kernel-kdump 3.10.0-514.48.3.el7, kernel-tools 3.10.0-514.48.3.el7, kernel-tools-libs 3.10.0-514.48.3.el7, +6 more
    fixed: vendor fix RHSA-2018:1348
  • Red Hat Enterprise Linux Server EUS (v. 7.4) perf 3.10.0-693.25.4.el7, kernel 3.10.0-693.25.4.el7, python-perf 3.10.0-693.25.4.el7, kernel-kdump 3.10.0-693.25.4.el7, kernel-tools 3.10.0-693.25.4.el7, kernel-tools-libs 3.10.0-693.25.4.el7, +6 more
    fixed: vendor fix RHSA-2018:1345
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-862.2.3.el7, kernel-debuginfo-common-x86_64 3.10.0-862.2.3.el7, kernel-debuginfo-common-ppc64le 3.10.0-862.2.3.el7
    fixed: vendor fix RHSA-2018:1318
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.66.3.el7 Red Hat Enterprise Linux Server Optional E4S (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.66.3.el7
    fixed: vendor fix RHSA-2018:1347
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.3) kernel-debuginfo-common-ppc64 3.10.0-514.48.3.el7, kernel-debuginfo-common-x86_64 3.10.0-514.48.3.el7, kernel-debuginfo-common-ppc64le 3.10.0-514.48.3.el7
    fixed: vendor fix RHSA-2018:1348
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.4) kernel-debuginfo-common-ppc64 3.10.0-693.25.4.el7, kernel-debuginfo-common-x86_64 3.10.0-693.25.4.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.25.4.el7
    fixed: vendor fix RHSA-2018:1345
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.66.3.el7 Red Hat Enterprise Linux Server TUS (v. 7.2) perf 3.10.0-327.66.3.el7, kernel 3.10.0-327.66.3.el7, python-perf 3.10.0-327.66.3.el7, kernel-tools 3.10.0-327.66.3.el7, kernel-tools-libs 3.10.0-327.66.3.el7, kernel-abi-whitelists 3.10.0-327.66.3.el7, +1 more
    fixed: vendor fix RHSA-2018:1347
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-862.2.3.el7, kernel 3.10.0-862.2.3.el7, python-perf 3.10.0-862.2.3.el7, kernel-tools 3.10.0-862.2.3.el7, kernel-tools-libs 3.10.0-862.2.3.el7, kernel-abi-whitelists 3.10.0-862.2.3.el7, +1 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.2.3.el7
    fixed: vendor fix RHSA-2018:1318
  • Red Hat Virtualization 4 Hypervisor for RHEL 7 redhat-virtualization-host 4.2-20180508.0.el7_5, redhat-virtualization-host-image-update 4.2-20180508.0.el7_5
    fixed: vendor fix RHSA-2018:1524
  • Red Hat RHEL 7-based RHEV-H ELS rhev-hypervisor7 7.3-20180521.1.el7ev, redhat-virtualization-host 3.6-20180521.0.el7_3, redhat-virtualization-host-image-update 3.6-20180521.0.el7_3
    fixed: vendor fix RHSA-2018:1711
  • Red Hat RHEL 7-based RHEV-H for RHEV 4 (build requirements) imgbased 1.0.16-0.1.el7ev, python-imgbased 1.0.16-0.1.el7ev, ovirt-node-ng 4.2.0-0.20170814.0.el7, ovirt-node-ng-nodectl 4.2.0-0.20170814.0.el7, redhat-release-virtualization-host 4.2-3.0.el7, redhat-virtualization-host-image-update-placeholder 4.2-3.0.el7
    fixed: vendor fix RHSA-2018:1524
  • Red Hat RHEV Hypervisor for RHEL-6 ELS rhev-hypervisor7 7.3-20180521.1.el6ev
    fixed: vendor fix RHSA-2018:1711
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, python-perf, kernel-kdump, kernel-tools, kernel-tools-libs, +2 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-core, kernel-tools, python3-perf, +17 more 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

0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 8.0 CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • kernel KVM

Classification

Weakness
  • CWE-250 Execution with Unnecessary Privileges
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.