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CVE-2022-1158

Date: August 4, 2022

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.

Severity Score

Related Resources (8)

https://access.redhat.com/security/cve/CVE-2022-1158
https://www.openwall.com/lists/oss-security/2022/04/08/4
https://security-tracker.debian.org/tracker/CVE-2022-1158
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-1158
https://nvd.nist.gov/vuln/detail/CVE-2022-1158
https://bugzilla.redhat.com/show_bug.cgi?id=2069793
https://security.netapp.com/advisory/ntap-20230214-0003/
https://www.mend.io/vulnerability-database/CVE-2022-1158

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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