In the Linux kernel, the following vulnerability has been resolved: USB: c67x00: fix use-after-free in c67x00_add_iso_urb() When TD creation fails for the last packet of an isochronous URB, c67x00_add_iso_urb() gives the URB back before updating the endpoint scheduling state. c67x00_giveback_urb() frees the URB private data, and the completion callback may release the final URB reference. The following accesses to urbp->ep_data, urb->interval, and urbp->cnt can therefore use freed memory. Update next_frame and cnt before giving back the failed final packet, making the giveback the last operation that uses the URB and its private data.

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

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References
Link Providers
https://git.kernel.org/stable/c/62cd519ab74cac499036cd88c11692f8f0d53e14 cve-icon cve-icon
https://git.kernel.org/stable/c/7983daa159981fac125db2457437723f38ea1472 cve-icon cve-icon
https://git.kernel.org/stable/c/ade18b4ce78a16558f4f435aece80082f6f7b64c cve-icon cve-icon
https://git.kernel.org/stable/c/b1e24de475bf2d66fffc9103f3444b783527d55a cve-icon cve-icon
https://git.kernel.org/stable/c/b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421 cve-icon cve-icon
https://git.kernel.org/stable/c/bb572801290e25ec1c4753d14af35777303f5d6b cve-icon cve-icon
https://git.kernel.org/stable/c/e4039e9bebb528dd9cd7ac72aeaec529c26c355a cve-icon cve-icon
https://git.kernel.org/stable/c/f24dcc61bd0ecf7639fac5bf700450b398d793a7 cve-icon cve-icon
https://git.kernel.org/stable/c/ff172092cba7ec990ecc7b610ce703e19570b8f0 cve-icon cve-icon
History

Fri, 04 Sep 2026 19:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416

Fri, 04 Sep 2026 16:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: USB: c67x00: fix use-after-free in c67x00_add_iso_urb() When TD creation fails for the last packet of an isochronous URB, c67x00_add_iso_urb() gives the URB back before updating the endpoint scheduling state. c67x00_giveback_urb() frees the URB private data, and the completion callback may release the final URB reference. The following accesses to urbp->ep_data, urb->interval, and urbp->cnt can therefore use freed memory. Update next_frame and cnt before giving back the failed final packet, making the giveback the last operation that uses the URB and its private data.
Title USB: c67x00: fix use-after-free in c67x00_add_iso_urb()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-09-04T15:54:30.131Z

Updated: 2026-09-04T15:54:30.131Z

Reserved: 2026-08-26T14:34:25.795Z

Link: CVE-2026-80826

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-04T16:18:10.543

Modified: 2026-09-04T16:18:10.543

Link: CVE-2026-80826

cve-icon Redhat

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