CVE-2026-64290
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedJul 25, 2026
First seenJul 25, 2026
Weakness typeCWE-835CWE-835
How to fix
Update
- linux linux_kernel6.12.101, 6.18.39, 7.1.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.11 ≤ v < 6.12.101, 6.13 ≤ v < 6.18.39, 6.19 ≤ v < 7.1.4 | 6.12.101, 6.18.39, 7.1.4 |
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