CVE-2019-3887
- State
- Published
- Severity
- 6.7 Medium
- Published
- Apr 9, 2019
- Updated
- Aug 4, 2024
- Reserved
- Jan 3, 2019
Description
A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.0 | 6.7 Medium | CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H | redhat |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
KernelThe Linux Foundation |
|
References
- 107850vdb-entry
- FEDORA-2019-94dc902948vendor-advisory
- USN-3980-1vendor-advisory
- USN-3979-1vendor-advisory
- USN-3980-2vendor-advisory
- RHSA-2019:2703vendor-advisory
- RHSA-2019:2741vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3887
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