CVE-2018-18021

Source
https://nvd.nist.gov/vuln/detail/CVE-2018-18021
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-18021.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2018-18021
Downstream
Published
2018-10-07T06:29:00Z
Modified
2025-08-09T20:01:27Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
Summary
[none]
Details

arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the KVMSETON_REG ioctl. This is exploitable by attackers who can create virtual machines. An attacker can arbitrarily redirect the hypervisor flow of control (with full register control). An attacker can also cause a denial of service (hypervisor panic) via an illegal exception return. This occurs because of insufficient restrictions on userspace access to the core register file, and because PSTATE.M validation does not prevent unintended execution modes.

References

Affected packages