Null pointer dereference in Linux kernel - CVE-2017-18079

 

Null pointer dereference in Linux kernel - CVE-2017-18079

Published: March 12, 2018


Vulnerability identifier: #VU10939
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-18079
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

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

The weakness exists in the drivers/input/serio/i8042.c due to the port->exists value can change after it is validated. A remote attacker can trigger NULL pointer dereference and cause the system to crash.

How to mitigate CVE-2017-18079

Update to version 4.12.4.

Sources