Linux · Linux Kernel · CVE-2025-21687
**Name of the Vulnerable Software and Affected Versions**
Linux kernel (affected versions not specified)
**Description**
The issue concerns the Linux kernel, specifically the vfio/platform component, where the bounds of read/write syscalls are not properly checked. The `count` and `offset` variables are passed from user space without being validated, except that `offset` is capped at 40 bits. This limitation can be exploited to read or write beyond the device's boundaries.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.