Description
The access_pmu_evcntr function in arch/arm64/kvm/sys_regs.c in the Linux kernel before 4.8.11 allows privileged KVM guest OS users to cause a denial of service (assertion failure and host OS crash) by accessing the Performance Monitors Cycle Count Register (PMCCNTR).
Metrics
CVSS 3.1 6.0/10
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | Linux kernel before 4.9 | Linux kernel before 4.9 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9Issue Tracking, Patch, Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11Release Notes, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1492984Issue Tracking, Patch, Third Party Advisory
- https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9Issue Tracking, Patch, Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9Issue Tracking, Patch, Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11Release Notes, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1492984Issue Tracking, Patch, Third Party Advisory
- https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9Issue Tracking, Patch, Third Party Advisory
Timeline
- Published
- Sep 20, 2017
- Last modified
- Jun 17, 2026
- NVD status
- Modified