Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.11, < 6.12.101 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/172fc8b19825a0f5884c38f2289188284e2d45eePatch
- https://git.kernel.org/stable/c/5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8Patch
- https://git.kernel.org/stable/c/a38e0714affc5c0bbb40cba5a65d6d32a5e72a71Patch
- https://git.kernel.org/stable/c/f66c16b175509642ee7082df57c9bf3deaebae1aPatch
FAQ
What is CVE-2026-64290?
CVE-2026-64290 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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, ...
How severe is CVE-2026-64290?
CVE-2026-64290 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-64290?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.