NULL pointer dereference in Linux kernel - CVE-2017-12192
Published: February 26, 2018 / Updated: February 26, 2018
Vulnerability identifier: #VU10711
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2017-12192
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in the Key Management sub component of the Linux kernel when trying to issue a KEYTCL_READ on a negative key due to a NULL pointer dereference. A local attacker can cause the kernel and service to crash.
The weakness exists in the Key Management sub component of the Linux kernel when trying to issue a KEYTCL_READ on a negative key due to a NULL pointer dereference. A local attacker can cause the kernel and service to crash.
Affected software
Linux kernel
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
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server (for IBM Power LE) - 4 Year Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux Server - 4 Year Extended Update Support
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
Ubuntu
kernel (Red Hat package)
Red Hat Virtualization Host
Juniper Junos Space
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
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server (for IBM Power LE) - 4 Year Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux Server - 4 Year Extended Update Support
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
Ubuntu
kernel (Red Hat package)
Red Hat Virtualization Host
Juniper Junos Space
How to mitigate CVE-2017-12192
Update to version 4.13.5.
kernel (Red Hat package) - addressed in versions 2.6.32-754.30.2.el6, 3.10.0-693.17.1.el7
Juniper Junos Space - update to 20.3R1
Juniper Junos Space - update to 20.3R1