Wangjinchao

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** The issue is related to a Use-After-Free (UAF) problem in the Linux kernel's padata component. In a high-load arm64 environment, the pcrypt aead01 test in LTP can lead to system UAF issues. This occurs because `local bh enable()` in padata takes longer to execute than usual due to high system load and accumulated unexecuted softirq, resulting in `pd` being released by `padata free shell()` before accessing `pd->refcnt`. The fix involves adding `refcount dec and test` before calling `padata free pd` in `padata free shell()`. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.