Race condition in Linux kernel - CVE-2017-18203

Vulnerability identifier: #VU11190

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-2017-18203

CWE-ID: CWE-362

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the dm_get_from_kobject function due to race condition. A local attacker can cause the service to crash.

Linux kernel
Debian Linux
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
SUSE Linux

kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-alt (Red Hat package)
Red Hat Virtualization Host

Update to version 4.14.3.

kernel (Red Hat package) - update to 3.10.0-862.el7
kernel-rt (Red Hat package) - update to 3.10.0-862.rt56.804.el7
kernel-alt (Red Hat package) - update to 4.14.0-115.16.1.el7a

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b9a41d21dceadf81048126...

• Denial of service in Linux Kernel
• SUSE Linux update for the Linux Kernel
• Debian update for linux
• SUSE Linux update for the Linux Kernel
• SUSE Linux update for the Linux Kernel
• SUSE Linux update for the Linux Kernel
• Red Hat update for kernel
• Red Hat update for kernel-rt
• Red Hat update for kernel-alt