CVE-2018-12904

medium

Description

In arch/x86/kvm/vmx.c in the Linux kernel before 4.17.2, when nested virtualization is used, local attackers could cause L1 KVM guests to VMEXIT, potentially allowing privilege escalations and denial of service attacks due to lack of checking of CPL.

References

https://www.exploit-db.com/exploits/44944/

https://usn.ubuntu.com/3752-3/

https://usn.ubuntu.com/3752-2/

https://usn.ubuntu.com/3752-1/

https://github.com/torvalds/linux/commit/727ba748e110b4de50d142edca9d6a9b7e6111d8

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.2

https://bugs.chromium.org/p/project-zero/issues/detail?id=1589

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=727ba748e110b4de50d142edca9d6a9b7e6111d8

Details

Source: Mitre, NVD

Published: 2018-06-27

Updated: 2019-10-03

Risk Information

CVSS v2

Base Score: 4.4

Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 4.9

Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Severity: Medium