CVE-2026-62428: grant-table: type confusion in grant-copy
When grant-copy operations are processed, the respective grant may or may not already be in use by another operation (a mapping or another copy). For all copy operations the referenced guest frame is looked up. When another operation is already active for the grant (the grant is "pinned"), what is being supplied back to actually carry out permission checks and copy operation may not be consistent: The permission check may be carried out on a page different from the one involved in the copy.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62428?
The severity of CVE-2026-62428 is rated at 47.
How do I fix CVE-2026-62428?
To fix CVE-2026-62428, apply the latest security updates or patches provided by the software vendor.
What systems are affected by CVE-2026-62428?
CVE-2026-62428 affects systems utilizing the grant-table mechanism in Xen hypervisor for handling memory grants.
What are the potential impacts of CVE-2026-62428?
The potential impacts of CVE-2026-62428 include type confusion during grant-copy operations, leading to possible security vulnerabilities.
Is CVE-2026-62428 being actively exploited?
As of the latest information, there has been no indication that CVE-2026-62428 is being actively exploited in the wild.