CVE-2022-1158
Global infos:
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.
CVE Status: Modified
References:
Metrics:
| Attribute | Value |
|---|---|
| Attack Complexity | LOW |
| Attack Vector | LOCAL |
| Availability Impact | HIGH |
| Base Score | 7.8 |
| Base Severity | HIGH |
| Confidentiality Impact | HIGH |
| Integrity Impact | HIGH |
| Privileges Required | LOW |
| Scope | UNCHANGED |
| User Interaction | NONE |
| Vector String | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Exploitability Score | 1.8 |
| Impact Score | 5.9 |
| Source | [email protected] |
| Type | Primary |