Marius Fleischer

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** The issue is related to a null pointer dereference in the `mas empty area rev()` function within the `lib/maple tree.c` module of the Linux kernel. This occurs when `mas start()` is called followed by `mas data end()` if the maple state is `MA START`, but `mas start()` may return with the maple state node being `NULL`. A user could trigger events to cause a kernel oops by unmapping all vmas to produce an empty maple tree, then mapping a vma that would cause this scenario. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.