CyberRota Analysis
AI-GeneratedThe vulnerability in the Linux kernel affects the io_uring subsystem, where per-task restrictions are not maintained across the exec system call, potentially allowing unauthorized access to resources. This could lead to privilege escalation or data leakage for tasks that utilize io_uring, as newly created rings may operate without the intended restrictions. System administrators and developers using Linux environments with io_uring should prioritize addressing this issue to ensure proper task isolation and security.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: preserve task restrictions across exec Per-task restrictions apply to all rings created by a task. Once installed, they should not be dropped across exec. For a task that has used io_uring, the exec cancellation path calls __io_uring_free(). This frees both the task context and the per-task restriction, so a ring created after exec is unrestricted. Split task context cleanup into io_uring_free_tctx(), and use it from the exec cancellation path. Keep __io_uring_free() for final task cleanup, where both the context and restriction are released.