CVE-2018-12904

Public Exploit

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.

4.9

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.19%

Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory kernel.org Vendor Advisory kernel.org

Affected: n/a n/a

References

Link	Tags
https://usn.ubuntu.com/3752-2/	third party advisory vendor advisory
https://github.com/torvalds/linux/commit/727ba748e110b4de50d142edca9d6a9b7e6111d8	third party advisory patch
https://usn.ubuntu.com/3752-3/	third party advisory vendor advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.2	release notes vendor advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1589	third party advisory exploit
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=727ba748e110b4de50d142edca9d6a9b7e6111d8	patch vendor advisory
https://usn.ubuntu.com/3752-1/	third party advisory vendor advisory
https://www.exploit-db.com/exploits/44944/	third party advisory vdb entry exploit

Frequently Asked Questions

What is the severity of CVE-2018-12904?: CVE-2018-12904 has been scored as a medium severity vulnerability.
How to fix CVE-2018-12904?: To fix CVE-2018-12904, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-12904 being actively exploited in the wild?: It is possible that CVE-2018-12904 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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