Red Hat: CVE-2022-1158: cmpxchg_gpte can write to pfns outside the userspace region (Multiple Advisories)
4
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
08/05/2022
12/01/2022
11/30/2022
03/13/2024
Description
A flaw was found in KVM. When updating a guest's page table entry, vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel, resulting in a denial of service condition.
Solution(s)
- redhat-upgrade-kernel
- redhat-upgrade-kernel-rt
Advanced vulnerability management analytics and reporting.
Key Features
- Lightweight Endpoint Agent
- Live Dashboards
- Real Risk Prioritization
- IT-Integrated Remediation Projects
- Cloud, Virtual, and Container Assessment
- Integrated Threat Feeds
- Easy-to-Use RESTful API
- Automation-Assisted Patching
- Automated Containment
With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.
– Scott Cheney, Manager of Information Security, Sierra View Medical Center