CVE-2026-64290
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.
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | 07838f7fd529c8a6de44b601d4b7057e6c8d36ed < 5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8, 07838f7fd529c8a6de44b601d4b7057e6c8d36ed < f66c16b175509642ee7082df57c9bf3deaebae1a, 07838f7fd529c8a6de44b601d4b7057e6c8d36ed < 172fc8b19825a0f5884c38f2289188284e2d45ee |
| Linux | Linux | — | 6.11, 0 < 6.11, 6.18.39 ≤ 6.18.*, 7.1.4 ≤ 7.1.* … |
References (3)