Privilege escalation in Linux kernel - CVE-2017-7518

Vulnerability identifier: #VU7206

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-7518

CWE-ID: CWE-264

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows an local attacker to gain elevated privileges on the guest system.

The weakness exists due to debug exception error in syscall emulation. A attacker can gain system privileges.

Successful exploitation of the vulnerability results in privilege escalation.

Linux kernel
Debian Linux
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
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 for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - 4 Year Extended Update Support
Red Hat Enterprise Linux Server (for IBM Power LE) - 4 Year 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 Power, big endian - Extended Update Support
Opensuse

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

Install update from vendor's website.

android-emulator-hypervisor-driver-for-amd-processors - update to 2.2
kernel (Red Hat package) - update to 3.10.0-693.21.1.el7
kernel-rt (Red Hat package) - update to 3.10.0-693.21.1.rt56.639.el7

• https://www.spinics.net/lists/kvm/msg151817.html
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c8401dda2f0a00cd25c0af...

• Privilege escalation in Linux kernel
• openSUSE update for the Linux Kernel
• Debian update for linux
• Red Hat update for kernel-rt
• Red Hat update for kernel
• Multiple vulnerabilities in android-emulator-hypervisor-driver-for-amd-processors