Dashboard / CVE-2026-64290

CVE-2026-64290

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-07-25 Modified: 2026-11-06 First seen: 2026-11-06 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

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.

Weakness Classification (1)

Affected Software (6)

VendorProductVersion
Linux Linux 07838f7fd529c8a6de44b601d4b7057e6c8d36ed < a38e0714affc5c0bbb40cba5a65d6d32a5e72a71
Linux Linux 07838f7fd529c8a6de44b601d4b7057e6c8d36ed < 5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8
Linux Linux 07838f7fd529c8a6de44b601d4b7057e6c8d36ed < f66c16b175509642ee7082df57c9bf3deaebae1a
Linux Linux 07838f7fd529c8a6de44b601d4b7057e6c8d36ed < 172fc8b19825a0f5884c38f2289188284e2d45ee
Linux Linux 6.11
linux linux_kernel 6.11 – 6.12.101

References & Advisories (4)

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.16%
Raw Score 0.001590
Percentile 5.1%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00159
2026-11-12
0.00159
2026-11-10
0.00159
2026-11-09
0.00159
2026-11-08
0.00159
2026-11-07
0.00159
2026-11-06
0.00159

Intelligence Sources

mitre ref →
nvd ref →

External Links