CVE-2018-12904

Severity

44%

Complexity

34%

Confidentiality

106%

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.

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.

CVSS 3.0 Base Score 4.9. CVSS Attack Vector: local. CVSS Attack Complexity: high. CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L).

CVSS 2.0 Base Score 4.4. CVSS Attack Vector: local. CVSS Attack Complexity: medium. CVSS Vector: (AV:L/AC:M/Au:N/C:P/I:P/A:P).

Overview

Type

Linux

First reported 6 years ago

2018-06-27 11:29:00

Last updated 5 years ago

2019-10-03 00:03:00

Affected Software

Linux Kernel

Canonical Ubuntu Linux 16.04 LTS (Long-Term Support)

16.04

Canonical Ubuntu Linux 18.04 LTS Edition

18.04

References

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

Patch, Vendor Advisory

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

Exploit, Third Party Advisory

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

Release Notes, Vendor Advisory

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

Patch, Third Party Advisory

USN-3752-1

Third Party Advisory

USN-3752-2

Third Party Advisory

USN-3752-3

Third Party Advisory

44944

Exploit, Third Party Advisory, VDB Entry

Stay updated

ExploitPedia is constantly evolving. Sign up to receive a notification when we release additional functionality.

Get in touch

If you'd like to report a bug or have any suggestions for improvements then please do get in touch with us using this form. We will get back to you as soon as we can.