CVE-2017-12168

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).

• CWE-617
• CWE-617

• 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

Published

Sep 20, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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