CVE-2026-64290

Published: July 28, 2026Last modified: July 28, 2026

Description

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.

Status

References

• https://git.kernel.org/stable/c/172fc8b19825a0f5884c38f2289188284e2d45ee
• https://git.kernel.org/stable/c/5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8
• https://git.kernel.org/stable/c/f66c16b175509642ee7082df57c9bf3deaebae1a