CVE-2026-64348None▾ SunlitIn 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.1%
Last analysed / modified upstream
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.
Linux >= 8de98402652c01839ae321be6cb3054cf5735d83 < b0d00d077f9738d215af9b50c74dffab7a1de19fLinux >= 8de98402652c01839ae321be6cb3054cf5735d83 < ab12316c4639237cc9d50c80a0c6240f11fbba3fLinux >= 8de98402652c01839ae321be6cb3054cf5735d83 < be5004395dfd0b6ec310db359f887fa396fd0dd2Linux >= 8de98402652c01839ae321be6cb3054cf5735d83 < 8890699eea19027ef6e4f9cbcf27cba5e789793fLinux >= 8de98402652c01839ae321be6cb3054cf5735d83 < 6bc17a78a05671d303820224fb37ca339c1dc2cbLinux >= 8de98402652c01839ae321be6cb3054cf5735d83 < 4bb88aee6b868cbf73bf453f62497802f5fe4769Linux >= 8de98402652c01839ae321be6cb3054cf5735d83 < b9399d25fbb34a05bbe76eeedd730f62ff2670e9Linux 2.6.15Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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