CVE-2018-12904 EXPLOIT
4.9
MEDIUM · CVSS 3.0 · EPSS 1.2% (pctl 67)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 4.9 (MEDIUM, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
| EPSS | 1.18% — more likely to be exploited than 67% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2018-06-27 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| linux | linux kernel |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | KVM (Nested Virtualization) - L1 Guest Privilege Escalation | 2018-06-25 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=727ba748e110b4de50d142edca9d6a9b7e6111d8
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1589
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.2
- https://github.com/torvalds/linux/commit/727ba748e110b4de50d142edca9d6a9b7e6111d8
- https://usn.ubuntu.com/3752-1/
- https://usn.ubuntu.com/3752-2/
- https://usn.ubuntu.com/3752-3/
- https://www.exploit-db.com/exploits/44944/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=727ba748e110b4de50d142edca9d6a9b7e6111d8
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1589
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.2
- https://github.com/torvalds/linux/commit/727ba748e110b4de50d142edca9d6a9b7e6111d8
- https://usn.ubuntu.com/3752-1/
- https://usn.ubuntu.com/3752-2/
- https://usn.ubuntu.com/3752-3/
- https://www.exploit-db.com/exploits/44944/
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