What is CVE-2026-64290?

CVE-2026-64290 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Infinite Loop flaw (CWE-835), affecting Linux kernel versions from 6.11 onward and patched in 6.12.101, 6.18.39, 7.1.4 and others. CVE-2026-64290 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-64290?

CVE-2026-64290 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-64290?

Yes, CVE-2026-64290 has been patched. Fixed versions include 6.12.101, 6.18.39, 7.1.4 and others. If you are running Linux kernel 6.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-64290 actively exploited?

CVE-2026-64290 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Infinite Loop (CWE-835)?

The product contains an iteration that does not exit even when it should. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/835.html

CVE-2026-64290

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, 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.

Package Linux Kernel

Published 2026-07-25

Last modified 2026-08-17

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-835

CVE-2026-64290 is a Infinite Loop vulnerability

What is Infinite Loop?

The product contains an iteration that does not exit even when it should. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.11 and later are affected. Fixed in 6.12.101, 6.18.39, 7.1.4, 7.2 and their respective stable series.

Affected from

≥ 6.11

Fixed in

✓ 6.12.101 6.12.x ✓ 6.18.39 6.18.x ✓ 7.1.4 7.1.x ✓ 7.2

References

4 total

Kernel Git
https://git.kernel.org/stable/c/172fc8b19825a0f5884c38f2289188284e2d45ee

Patch
Kernel Git
https://git.kernel.org/stable/c/5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8

Patch
Kernel Git
https://git.kernel.org/stable/c/a38e0714affc5c0bbb40cba5a65d6d32a5e72a71

Patch
Kernel Git
https://git.kernel.org/stable/c/f66c16b175509642ee7082df57c9bf3deaebae1a

Patch

Details

CVE ID CVE-2026-64290

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-07-25

Modified 2026-08-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-64290?

CVE-2026-64290 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Infinite Loop flaw (CWE-835) . It affects Linux kernel versions from 6.11 onward and has been patched in 6.12.101, 6.18.39, 7.1.4 and others. CVE-2026-64290 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-64290?

CVE-2026-64290 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-64290?

Yes. CVE-2026-64290 has been patched. Fixed versions include 6.12.101, 6.18.39, 7.1.4 and others. If you are running Linux kernel 6.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-64290 actively exploited?

No. CVE-2026-64290 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.