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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://usn.ubuntu.com/3752-2/ ↗
- https://github.com/torvalds/linux/commit/727ba748e110b4de50d142edca9d6a9b7e6111d8 ↗
- https://usn.ubuntu.com/3752-3/ ↗
- 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 ↗
- https://usn.ubuntu.com/3752-1/ ↗
- https://www.exploit-db.com/exploits/44944/ ↗