John.Doe

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** The Linux kernel’s `kasan populate vmalloc()` function and its helpers did not correctly respect the caller’s `gfp mask`, always using `GFP KERNEL` instead. This inconsistency with `vmalloc()`, which supports `GFP NOFS` and `GFP NOIO` allocations, could lead to a deadlock, particularly in scenarios where `vmalloc` is called with `GFP NOFS`, such as by XFS. The issue stemmed from page table allocations during shadow population also ignoring the external `gfp mask`. The patch addresses this by extending `kasan populate vmalloc()` and helpers to accept `gfp mask`, passing it down to allocation functions, and enforcing `GFP NOFS`/`GFP NOIO` semantics around `apply to page range()`. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.