CVE-2026-98224

In the Linux kernel, the following vulnerability has been resolved:

mm/vma: correctly unaccount on mmap prepare() failure

mmap setup() accounts memory for relevant mappings via:

security vm enough memory mm() -> vm enough memory() -> vm acct memory()

If mmap setup() fails, this indicates that this accounting did not take place, and thus it's appropriate for mmap region() to jump to abort munmap.

However if call mmap prepare() fails, it also jumps there and any accounted memory is not correctly unaccounted.

Fix this by handling each error separately.