Lu Jialin

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** A hungtask bug was found in the Linux kernel's crypto component, specifically in the pcrypt module. The issue occurs when the `pinst->flags` is set to `PADATA RESET`, causing the `padata do parallel` function to return an error code of `-EBUSY` instead of calling `aead request complete()`. This leads to a hung task in the `test aead vec cfg` function, resulting in a kernel panic. The problem is resolved by replacing the return error code `-EBUSY` with `-EAGAIN`, indicating that the parallel data is changing and the caller should retry the operation. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.