Martin Mazein

**Name of the Vulnerable Software and Affected Versions** Linux kernel versions 3.11 through 5.10.16 **Description** The issue is related to errors in mapping grant references provided by the frontend in the Linux kernel's Xen driver. This can lead to the caller assuming successful mapping and attempting to access unmapped space, or internal state not being updated sufficiently to prevent safe recovery from errors. The estimated number of potentially affected devices worldwide is not specified. There is no information about real-world incidents where this issue was exploited. **Recommendations** For Linux kernel versions 3.11 through 5.10.16, update to a version later than 5.10.16 to resolve the issue. At the moment, there is no information about other versions that contain a fix for this vulnerability.