Denial of service in Linux kernel - CVE-2017-2583

 

Denial of service in Linux kernel - CVE-2017-2583

Published: January 20, 2017 / Updated: June 30, 2017


Vulnerability identifier: #VU5183
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-2583
CWE-ID: CWE-264
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows an adjacent attacker to cause DoS condition.

The weakness exists due to improper emulation of "MOV SS, NULL selector" instruction by the load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel. A quest OS user can use a specially crafted and cause the system to crash.

Successful exploitation of the vulnerability results in denial of service.

Affected software

Linux kernel
Arch Linux
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Server for ARM
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - Extended Update Support
Fedora

android-emulator-hypervisor-driver-for-amd-processors
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel

How to mitigate CVE-2017-2583

Update to version 4.9.5.

android-emulator-hypervisor-driver-for-amd-processors - update to 2.2
kernel (Red Hat package) - update to 3.10.0-514.26.1.el7
kernel-rt (Red Hat package) - update to 3.10.0-514.26.1.rt56.442.el7
kernel - addressed in versions 4.9.5-100.fc24, 4.9.5-200.fc25

External References

Related Security Bulletins