CVE-2026-64290

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 v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/172fc8b19825a0f5884c38f2289188284e2d45ee	Patch
https://git.kernel.org/stable/c/5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8	Patch
https://git.kernel.org/stable/c/a38e0714affc5c0bbb40cba5a65d6d32a5e72a71	Patch
https://git.kernel.org/stable/c/f66c16b175509642ee7082df57c9bf3deaebae1a	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2026-07-25 10:17

Updated : 2026-08-17 05:17

NVD link : CVE-2026-64290

Mitre link : CVE-2026-64290

CVE.ORG link : CVE-2026-64290

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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