Linux · Linux Kernel · CVE-2022-49554
**Name of the Vulnerable Software and Affected Versions**
Linux kernel (affected versions not specified)
**Description**
A issue in the Linux kernel has been identified, where the asynchronous zspage free worker does not properly defend against page migration, leading to potential races. This can cause the worker to lock a page that no longer belongs to the zspage, unsafely dereference page private(), or observe a spurious NULL pointer to the next page. The issue is resolved by using migrate read lock() in lock zspage() to synchronize with page migration.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.