CVE-2024-51729 Information

Description

In the Linux kernel the following vulnerability has been resolved:

mm: use aligned address in copy_user_gigantic_page()

In current kernel hugetlb_wp() calls copy_user_large_folio() with the fault address. Where the fault address may be not aligned with the huge page size. Then copy_user_large_folio() may call copy_user_gigantic_page() with the address while copy_user_gigantic_page() requires the address to be huge page size aligned. So this may cause memory corruption or information leak addtional use more obvious naming ‘addr_hint’ instead of ‘addr’ for copy_user_gigantic_page().

Reference

https://git.kernel.org/stable/c/cb12d61361ce769672c7c7bd32107252598cdd8b https://git.kernel.org/stable/c/f5d09de9f1bf9674c6418ff10d0a40cfe29268e1