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CVE-2018-10853

UnknownEPSS 0.47%

Last modified

CVE-2018-10853 is a vulnerability of currently unknown severity. A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest.

Metrics

EPSS Probability
0.47%

37.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux18.04
DebianDebian Linux8.0
LinuxLinux Kernel< 4.18

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-10853?
A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest.
How severe is CVE-2018-10853?
Severity scoring for CVE-2018-10853 is pending analysis. The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.
How do I fix CVE-2018-10853?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-10853?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST