CVE-2024-53109

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

nommu: pass NULL argument to vma_iter_prealloc()

When deleting a vma entry from a maple tree, it has to pass NULL to

vma_iter_prealloc() in order to calculate internal state of the tree, but

it passed a wrong argument. As a result, nommu kernels crashed upon

accessing a vma iterator, such as acct_collect() reading the size of vma

entries after do_munmap().

This commit fixes this issue by passing a right argument to the

preallocation call.