arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the KVM_SET_ON_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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2018-10-07T06:00:00
Updated: 2024-08-05T11:01:14.808Z
Reserved: 2018-10-07T00:00:00
Link: CVE-2018-18021
Vulnrichment
No data.
NVD
Status : Modified
Published: 2018-10-07T06:29:00.273
Modified: 2019-04-03T01:29:03.190
Link: CVE-2018-18021
Redhat