Permissions, privileges, and access controls in Linux kernel - CVE-2018-10853

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Main Vulnerability Database Vulnerabilities #VU13369

Permissions, privileges, and access controls in Linux kernel - CVE-2018-10853

Published: June 16, 2018 / Updated: August 8, 2019


Vulnerability identifier: #VU13369
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-2018-10853
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists in the way Linux kernel KVM hypervisor emulates instructions, such as sgdt/sidt/fxsave/fxrstor. A local unprivileged user on a guest system can gain write access to kernel space on the same guest system.


Affected software

Linux kernel
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 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 Server - TUS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Virtualization Host - Extended Update Support 4.2 for RHEL
Opensuse
Fedora

android-emulator-hypervisor-driver-for-amd-processors
kernel (Red Hat package)
kernel-rt (Red Hat package)
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel
Red Hat Virtualization Host

How to mitigate CVE-2018-10853

The vulnerability is fixed in the versions 4.4.138, 4.9.10, 4.14.50, 4.16.16, 4.17.2.

Linux kernel - addressed in versions 4.4.138, 4.9.10, 4.14.50, 4.16.16, 4.17.2
android-emulator-hypervisor-driver-for-amd-processors - update to 2.2
kernel (Red Hat package) - addressed in versions 3.10.0-693.62.1.el7, 3.10.0-862.46.1.el7, 3.10.0-957.43.1.el7, 3.10.0-1062.el7
kernel-rt (Red Hat package) - update to 3.10.0-1062.rt56.1022.el7
kernel - addressed in versions 4.16.15-200.fc27, 4.16.15-300.fc28

External References

Related Security Bulletins