CVE-2017-18221

MEDIUM
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

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

Details

Source: MITRE

Published: 2018-03-07

Updated: 2018-05-31

Type: CWE-20

Risk Information

CVSS v2

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Tenable Plugins

View all (6 total)

IDNameProductFamilySeverity
124973EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1520)NessusHuawei Local Security Checks
critical
121605OracleVM 3.4 : Unbreakable / etc (OVMSA-2019-0002)NessusOracleVM Local Security Checks
high
120976Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2019-4315)NessusOracle Linux Local Security Checks
high
110050Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3655-1) (Spectre)NessusUbuntu Local Security Checks
high
108748SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0848-1)NessusSuSE Local Security Checks
critical
108705SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0834-1)NessusSuSE Local Security Checks
critical