Denial of service in Linux Kernel

Published: 2018-05-16

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2018-1000200
CWE-ID	CWE-476
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Linux kernel Operating systems & Components / Operating system
Vendor	Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Null pointer dereference

EUVDB-ID: #VU12742

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1000200

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to a flaw in the Linux kernel where an out of memory (oom) killing of a process that has large spans of mlocked memory. A local attacker can trigger NULL pointer dereference and cause the system to crash.

Mitigation

Update to version 4.16.9.

Vulnerable software versions

Linux kernel: 4.10 - 4.16.8

External links

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.9

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.