CVE-2017-18221

Description

The __munlock_pagevec function in mm/mlock.c in the Linux kernel before 4.11.4 allows local users to cause a denial of service (NR_MLOCK accounting corruption) via crafted use of mlockall and munlockall system calls.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.07%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/torvalds/linux/commit/70feee0e1ef331b22cc51f383d532a0d043fbdcc third party advisory patch
https://usn.ubuntu.com/3655-1/ vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=70feee0e1ef331b22cc51f383d532a0d043fbdcc patch vendor advisory
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.4 release notes vendor advisory
https://usn.ubuntu.com/3655-2/ vendor advisory
http://www.securityfocus.com/bid/103321 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-18221?
CVE-2017-18221 has been scored as a medium severity vulnerability.
How to fix CVE-2017-18221?
To fix CVE-2017-18221, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-18221 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-18221 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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