UBUNTU-CVE-2018-12904
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.
02 / AFFECTED SOFTWARE
Affected packages
20 explicit affected versions
18 explicit affected versions
38 explicit affected versions
16 explicit affected versions
11 explicit affected versions
11 explicit affected versions
10 explicit affected versions
11 explicit affected versions
8 explicit affected versions
12 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=727ba748e110b4de50d142edca9d6a9b7e6111d8
- https://ubuntu.com/security/CVE-2018-12904
- https://ubuntu.com/security/notices/USN-3752-1
- https://ubuntu.com/security/notices/USN-3752-2
- https://ubuntu.com/security/notices/USN-3752-3
- https://www.cve.org/CVERecord?id=CVE-2018-12904