Vulnerability identifier: #VU70502
Vulnerability risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-362
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to a race condition within the x86 KVM subsystem in the Linux kernel when nested virtualisation and the TDP MMU are enabled. A remote user on the guest OS can exploit the race and crash the host OS.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Linux kernel:
External links
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=47b0c2e4c220f2251fd8dcfbb44479819c715e15
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.