#VU12315 Information disclosure in Linux kernel - CVE-2017-15537
Published: April 30, 2018 / Updated: May 1, 2018
Vulnerability identifier: #VU12315
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-15537
CWE-ID: CWE-200
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 obtain potentially sensitive information.
The weakness exists in the x86/fpu (Floating Point Unit) subsystem due to incorrect handling of attempts to set reserved bits in the xstate header via the ptrace() or rt_sigreturn() system call when a processor supports the xsave feature but not the xsaves feature. A local attacker can read the FPU registers of other processes on the system, related to arch/x86/kernel/fpu/regset.c and arch/x86/kernel/fpu/signal.c.
Remediation
Update to version 4.13.5.