CyberRota Analysis
AI-GeneratedThe vulnerability allows a local user with the "userused" delegated ZFS permission to exploit the ZFS_IOC_USERSPACE_MANY ioctl, leading to a kernel heap overflow due to a mismatch in buffer size handling. This can result in privilege escalation, enabling the attacker to gain elevated access to system resources. System administrators and security teams managing ZFS environments should prioritize addressing this issue to mitigate potential exploitation risks.
Original NVD Description
The ZFS_IOC_USERSPACE_MANY ioctl, used by zfs-userspace(8), truncated a 64-bit output buffer size to a 32-bit integer for the kernel allocation, but used the original 64-bit size as the buffer limit when writing records. A local user with the "userused" delegated ZFS permission can trigger a kernel heap overflow via the ZFS_IOC_USERSPACE_MANY ioctl, potentially escalating privileges.
Related CVEs
Other vulnerabilities affecting the same vendor(s)