CVE-2024-46838

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: don't BUG_ON() if khugepaged yanks our page table Since khugepaged was changed to allow retracting page tables in file mappings without holding the mmap lock, these BUG_ON()s are wrong - get rid of them. We could also remove the preceding "if (unlikely(...))" block, but then we could reach pte_offset_map_lock() with transhuge pages not just for file mappings but also for anonymous mappings - which would probably be fine but I think is not necessarily expected.

The following products are affected by CVE-2024-46838 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2024-46838.

URL	Resource
https://git.kernel.org/stable/c/4828d207dc5161dc7ddf9a4f6dcfd80c7dd7d20a
https://git.kernel.org/stable/c/4a594acc12d5954cdc71d4450a386748bf3d136a
https://git.kernel.org/stable/c/db978287e908d48b209e374b00d847b2d785e0a9
https://lore.kernel.org/linux-cve-announce/2024092753-CVE-2024-46838-5fa5@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2024-46838
https://www.cve.org/CVERecord?id=CVE-2024-46838