#VU5182 Use-after-free error in Linux kernel - CVE-2017-2584
Published: January 20, 2017 / Updated: June 30, 2017
Vulnerability identifier: #VU5182
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-2584
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local attacker to cause DoS condition or obtain potentially sensitive information.
The weakness exists due to use-after-free error in the arch/x86/kvm/emulate.c script. A local attacker can use a specially crafted application that leverages instruction emulation for fxrstor, fxsave, sgdt, and sidt and cause the system to crash or read arbitrary file on the system.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists due to use-after-free error in the arch/x86/kvm/emulate.c script. A local attacker can use a specially crafted application that leverages instruction emulation for fxrstor, fxsave, sgdt, and sidt and cause the system to crash or read arbitrary file on the system.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Update to version 4.9.5.