CVE-2026-64290
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
iommufd: Break the loop on failure in iommufd_fault_fops_read()
On a copy_to_user() failure inside the inner list_for_each_entry, only the
inner loop breaks; the outer while re-fetches the just-restored fault group
and retries the failing copy_to_user() forever, spinning the reader at 100%
CPU with fault->mutex held.
Check rc after the inner loop and break the outer while as well.
https://git.kernel.org/stable/c/172fc8b19825a0f5884c38f2289188284e2d45ee
https://git.kernel.org/stable/c/5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8
https://git.kernel.org/stable/c/f66c16b175509642ee7082df57c9bf3deaebae1a