#VU9082 NULL pointer derefenrece in Linux kernel - CVE-2017-12193

Vulnerability identifier: #VU9082

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2017-12193

CWE-ID: CWE-476

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
Linux kernel

Software vendor:
Linux Foundation

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists in the assoc_array implementation in which a new leaf is added that needs to go into a node that happens to be full. A local user can trigger NULL pointer dereference error and crash the kernel.

Update to 4.13.11, 4.9.60, 4.4.96 or 4.1.46.

• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.96
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.46
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.60