Off-by-one error in Linux kernel - CVE-2017-2618

Vulnerability identifier: #VU5832

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-2017-2618

CWE-ID: CWE-193

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to cause denial of service.

The vulnerability exists due to off-by-one error in setprocattr. A local process with the process:setfscreate permission can cause a kernel panic.

Successful exploitation of this vulnerability may lead to denial of service conditions.

Linux kernel
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Real Time
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 Server for ARM
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
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 IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - Extended Update Support
Ubuntu
MRG Realtime
Red Hat Virtualization Host
kernel-rt (Red Hat package)
kernel (Red Hat package)

Install patch from repository.

kernel-rt (Red Hat package) - addressed in versions 3.10.0-514.rt56.219.el6rt, 3.10.0-514.16.1.rt56.437.el7
kernel (Red Hat package) - update to 3.10.0-514.16.1.el7

• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.49
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.10

• Multiple vulnerabilities in Linux kernel
• Ubuntu update for Linux kernel
• Ubuntu update for Linux kernel (Trusty HWE)
• Red Hat Enterprise Linux 7 update for kernel
• Red Hat Enterprise MRG 2 update for kernel-rt
• Red Hat Enterprise Linux 7 update for kernel-rt