CVE-2024-26786

In the Linux kernel, the following vulnerability has been resolved:
iommufd: Fix iopt_access_list_id overwrite bug Syzkaller reported the
following WARN_ON: WARNING: CPU: 1 PID: 4738 at
drivers/iommu/iommufd/io_pagetable.c:1360 Call Trace:
iommufd_access_change_ioas+0x2fe/0x4e0
iommufd_access_destroy_object+0x50/0xb0 iommufd_object_remove+0x2a3/0x490
iommufd_object_destroy_user iommufd_access_destroy+0x71/0xb0
iommufd_test_staccess_release+0x89/0xd0 __fput+0x272/0xb50
__fput_sync+0x4b/0x60 __do_sys_close __se_sys_close
__x64_sys_close+0x8b/0x110 do_syscall_x64 The mismatch between the access
pointer in the list and the passed-in pointer is resulting from an
overwrite of access->iopt_access_list_id, in iopt_add_access(). Called from
iommufd_access_change_ioas() when xa_alloc() succeeds but
iopt_calculate_iova_alignment() fails. Add a new_id in iopt_add_access()
and only update iopt_access_list_id when returning successfully.