NULL pointer dereference in Linux kernel - CVE-2015-8324

 

NULL pointer dereference in Linux kernel - CVE-2015-8324

Published: April 1, 2016 / Updated: April 17, 2018


Vulnerability identifier: #VU3871
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2015-8324
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

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

The weakness exists in the ext4 implementation due to improper track of the initialization of certain data structures. A physical attacker can submit a specially crafted USB device, related to the ext4_fill_super function, trigger NULL pointer dereference and cause the service to crash.

How to mitigate CVE-2015-8324

Update to version 2.6.34.

Sources