CVE-2017-18221 Information

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.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=70feee0e1ef331b22cc51f383d532a0d043fbdcc http://www.securityfocus.com/bid/103321 https://github.com/torvalds/linux/commit/70feee0e1ef331b22cc51f383d532a0d043fbdcc https://usn.ubuntu.com/3655-1/ https://usn.ubuntu.com/3655-2/ https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.4

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5