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 v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2018-10853
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
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.
Sources
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.109
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.138
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.2
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.16
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.50