CVE-2017-12168

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).

Category

6.0
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory kernel.org
Affected: n/a Linux kernel before 4.9
Published at:
Updated at:

References

Link Tags
https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9 issue tracking third party advisory patch
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11 release notes vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9 issue tracking third party advisory patch
https://bugzilla.redhat.com/show_bug.cgi?id=1492984 issue tracking third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2017-12168?
CVE-2017-12168 has been scored as a medium severity vulnerability.
How to fix CVE-2017-12168?
To fix CVE-2017-12168, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-12168 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-12168 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-12168?
CVE-2017-12168 affects n/a Linux kernel before 4.9.
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