#VU8812 Memory corruption in Linux kernel - CVE-2017-1000255

Vulnerability identifier: #VU8812

Vulnerability risk: Low

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

CVE-ID: CVE-2017-1000255

CWE-ID: CWE-119

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 execute arbitrary code with escalated privileges.

The vulnerability exists due to a boundary error in the Linux kernel's when handling signal frame on PowerPC systems. A malicious local user process could craft a signal frame allowing an attacker to corrupt memory and execute arbitrary code on the target system with escalated privileges.

Update to Linux kernel 4.9.55 or 4.13.6.

• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.55
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6