UNKNOWN NVD
CVE-2026-80826
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 las
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.
References
- https://git.kernel.org/stable/c/62cd519ab74cac499036cd88c11692f8f0d53e14
- https://git.kernel.org/stable/c/7983daa159981fac125db2457437723f38ea1472
- https://git.kernel.org/stable/c/ade18b4ce78a16558f4f435aece80082f6f7b64c
- https://git.kernel.org/stable/c/b1e24de475bf2d66fffc9103f3444b783527d55a
- https://git.kernel.org/stable/c/b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421
This unknown severity vulnerability was published on 2026-09-04 via NVD.
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