PT-2026-64511 · Linux · Linux
CVE-2026-64290
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Published
2026-07-25
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Updated
2026-07-25
None
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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.
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Related Identifiers
Affected Products
Linux