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CVE-2015-0239

UnknownEPSS 0.64%

Last modified

CVE-2015-0239 is a vulnerability of currently unknown severity. The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER instruction.. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER instruction.

Metrics

EPSS Probability
0.64%

46.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel< 3.18.5
CanonicalUbuntu Linux12.04
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux14.10
DebianDebian Linux7.0
DebianDebian Linux8.0
OracleLinux5
OracleLinux7
RedhatEnterprise Linux Desktop6.0
RedhatEnterprise Linux Server6.0
RedhatEnterprise Linux Workstation6.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-0239?
The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER instruction.
How severe is CVE-2015-0239?
Severity scoring for CVE-2015-0239 is pending analysis. The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.
How do I fix CVE-2015-0239?
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-2015-0239?

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

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Source: NVD / NIST