CVE-2017-6874

Name: CVE-2017-6874
Creator: NVD / NIST
Published: 2017-03-14T09:59:00.393+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7/10EPSS 0.26%

Last modified Jun 17, 2026

CVE-2017-6874 is a high-severity vulnerability rated 7/10 on the CVSS scale. Race condition in kernel/ucount.c in the Linux kernel through 4.10.2 allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls that leverage certain decrement behavior that causes incorrect interaction between put_ucounts and get_ucounts.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

Race condition in kernel/ucount.c in the Linux kernel through 4.10.2 allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls that leverage certain decrement behavior that causes incorrect interaction between put_ucounts and get_ucounts.

Metrics

CVSS 3.1

7/10

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

EPSS Probability

0.26%

17.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 4.9, < 4.9.16
Linux	Linux Kernel	>= 4.10, < 4.10.4

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=040757f738e13caaa9c5078bca79aa97e11dde88Issue Tracking, Patch, Third Party Advisory
http://www.securityfocus.com/bid/96856Third Party Advisory, VDB Entry
https://github.com/torvalds/linux/commit/040757f738e13caaa9c5078bca79aa97e11dde88Issue Tracking, Patch, Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=040757f738e13caaa9c5078bca79aa97e11dde88Issue Tracking, Patch, Third Party Advisory
http://www.securityfocus.com/bid/96856Third Party Advisory, VDB Entry
https://github.com/torvalds/linux/commit/040757f738e13caaa9c5078bca79aa97e11dde88Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Mar 14, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-6874?

How severe is CVE-2017-6874?

CVE-2017-6874 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-2017-6874?

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-2017-6874?

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

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Source: NVD / NIST