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CVE-2017-11176

HIGHCVSS 7.8/10EPSS 3.63%

Last modified

CVE-2017-11176 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.. EPSS estimates a 3.63% chance of exploitation in the next 30 days.

Description

The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.

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
3.63%

88.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel< 3.2.92
LinuxLinux Kernel>= 3.3, < 3.16.47
LinuxLinux Kernel>= 3.17, < 3.18.61
LinuxLinux Kernel>= 3.19, < 4.1.43
LinuxLinux Kernel>= 4.2, < 4.4.77
LinuxLinux Kernel>= 4.5, < 4.9.38
LinuxLinux Kernel>= 4.10, < 4.11.11
LinuxLinux Kernel>= 4.12, < 4.12.2
DebianDebian Linux8.0
DebianDebian Linux9.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-11176?
The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.
How severe is CVE-2017-11176?
CVE-2017-11176 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 3.63% probability of exploitation in the next 30 days.
How do I fix CVE-2017-11176?
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-2017-11176?

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

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Source: NVD / NIST