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No exploitation reportedFix available

CVE-2018-1087

No exploitation reported by the sources we read.

  • Published2018-05-15
  • WeaknessCWE-250

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2018-05-1516:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-04 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-1087?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-1087?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Canonical ubuntu linux
BranchAffectedFixed in
14.4= 14.04no fix published
16.4= 16.04no fix published
17.10= 17.10no fix published
Redhat enterprise linux server aus
BranchAffectedFixed in
7.2= 7.2no fix published
7.3= 7.3no fix published
7.4= 7.4no fix published
Redhat enterprise linux server eus
BranchAffectedFixed in
7.3= 7.3no fix published
7.4= 7.4no fix published
7.5= 7.5no fix published

8 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • imgbasedRed Hat:enterprise_linux:7::hypervisorall versions · fixed in 0:1.0.16-0.1.el7evand 1 other package
  • kernelRed Hat:rhel_tus:7.2::serverall versions · fixed in 0:3.10.0-327.66.3.el7and 17 other packages
  • kernelRed Hat:rhel_eus:7.4::serverall versions · fixed in 0:3.10.0-693.25.4.el7and 24 other packages
  • kernelRed Hat:rhel_eus:7.4::computenodeall versions · fixed in 0:3.10.0-693.25.4.el7and 17 other packages
  • kernelRed Hat:rhel_eus:7.3::serverall versions · fixed in 0:3.10.0-514.48.3.el7and 24 other packages
  • kernelRed Hat:rhel_eus:7.3::computenodeall versions · fixed in 0:3.10.0-514.48.3.el7and 17 other packages
  • kernelRed Hat:rhel_e4s:7.2::serverall versions · fixed in 0:3.10.0-327.66.3.el7and 17 other packages
  • kernelRed Hat:rhel_aus:7.2::serverall versions · fixed in 0:3.10.0-327.66.3.el7and 17 other packages

91 more package ranges on OSV.dev

Vendor advisories

  • RHSA-2018:1524 Red Hat Product Security10 products fixed

    Red Hat Security Advisory: redhat-virtualization-host bug fix and enhancement update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2018:1524 · 10 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.08known since 2026-10-23
  • NVDCVSS 3.07.8read 2026-10-23
  • NVDCVSS 2.04.6read 2026-10-23
  • CNAweakness (CWE)CWE-250known since 2026-10-23
  • FIRST EPSSEPSS score0.7 %2026-11-03
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2018-05-15
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2018-1087?

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.

Is CVE-2018-1087 actively exploited?

Active exploitation of CVE-2018-1087 has not been confirmed. Its EPSS score was 0.7% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-1087?

CVE-2018-1087 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record