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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-64348 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: usb: free iso schedules on failed submit EHCI and FOTG210 isochronous submits build an ehci_iso_sched before linking the URB to the endpoint queue, and keep the staged schedule in urb->hcpriv until iso_stream_schedule() and the link helpers consume it. If the controller is no longer accessible, or usb_hcd_link_urb_to_ep() fails, submit jumps to done_not_linked before that handoff happens and leaks the staged schedule still attached to urb->hcpriv. Free the staged schedule from done_not_linked when submit fails before the URB is linked and clear urb->hcpriv after the free. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1.1. An x86_64 allyesconfig build showed no new warnings. As we do not have an EHCI host controller with a USB isochronous device to test with, no runtime testing was able to be performed.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/4bb88aee6b868cbf73bf453f62497802f5fe4769 kernel.org
https://git.kernel.org/stable/c/6bc17a78a05671d303820224fb37ca339c1dc2cb kernel.org
https://git.kernel.org/stable/c/8890699eea19027ef6e4f9cbcf27cba5e789793f kernel.org
https://git.kernel.org/stable/c/b0d00d077f9738d215af9b50c74dffab7a1de19f kernel.org
https://git.kernel.org/stable/c/b9399d25fbb34a05bbe76eeedd730f62ff2670e9 kernel.org
https://git.kernel.org/stable/c/be5004395dfd0b6ec310db359f887fa396fd0dd2 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-64348
NVD Published Date:
07/25/2026
NVD Last Modified:
07/25/2026
Source:
kernel.org