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CVE-2016-4794

HIGHCVSS 7.8/10EPSS 0.50%

Last modified

CVE-2016-4794 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service (BUG) or possibly have unspecified other impact via crafted use of the mmap and bpf system calls.. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

Description

Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service (BUG) or possibly have unspecified other impact via crafted use of the mmap and bpf system calls.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.50%

38.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
LinuxLinux Kernel>= 3.18, < 3.18.37
LinuxLinux Kernel>= 3.19, < 4.1.28
LinuxLinux Kernel>= 4.2, < 4.4.16
LinuxLinux Kernel>= 4.5, < 4.6.5
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux16.04

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2016-4794?
Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service (BUG) or possibly have unspecified other impact via crafted use of the mmap and bpf system calls.
How severe is CVE-2016-4794?
CVE-2016-4794 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.
How do I fix CVE-2016-4794?
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-2016-4794?

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

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Source: NVD / NIST