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CVE-2016-8666

HIGHCVSS 7.5/10EPSS 4.70%

Last modified

CVE-2016-8666 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The IP stack in the Linux kernel before 4.6 allows remote attackers to cause a denial of service (stack consumption and panic) or possibly have unspecified other impact by triggering use of the GRO path for packets with tunnel stacking, as demonstrated by interleaved IPv4 headers and GRE headers, a related issue to CVE-2016-7039.. EPSS estimates a 4.70% chance of exploitation in the next 30 days.

Description

The IP stack in the Linux kernel before 4.6 allows remote attackers to cause a denial of service (stack consumption and panic) or possibly have unspecified other impact by triggering use of the GRO path for packets with tunnel stacking, as demonstrated by interleaved IPv4 headers and GRE headers, a related issue to CVE-2016-7039.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
4.70%

90.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel>= 3.14, < 3.16.35
LinuxLinux Kernel>= 3.17, < 3.18.47
LinuxLinux Kernel>= 3.19, < 4.1.38
LinuxLinux Kernel>= 4.2, < 4.4.29
LinuxLinux Kernel>= 4.5, < 4.6

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2016-8666?
The IP stack in the Linux kernel before 4.6 allows remote attackers to cause a denial of service (stack consumption and panic) or possibly have unspecified other impact by triggering use of the GRO path for packets with tunnel stacking, as demonstrated by interleaved IPv4 headers and GRE headers, a related issue to CVE-2016-7039.
How severe is CVE-2016-8666?
CVE-2016-8666 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.70% probability of exploitation in the next 30 days.
How do I fix CVE-2016-8666?
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-2016-8666?

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

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Source: NVD / NIST