What’s Vulnerable › Vulnerabilities

CVE-2017-12168

• Severity: medium (CVSS 6.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-09-20 · updated 2026-06-17
• Weakness: CWE-617

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).

Affected products

• Linux kernel: through 4.8.10

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11
• https://bugzilla.redhat.com/show_bug.cgi?id=1492984
• https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11
• https://bugzilla.redhat.com/show_bug.cgi?id=1492984
• https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9

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