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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-debuginfoUpgrade perf6.18Upgrade kernel6.18-develUpgrade bpftool6.18-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade kernel6.18-debuginfo-common-aarch64Upgrade python3-perf6.18Upgrade kernel6.18-tools-debuginfoUpgrade bpftool6.18Upgrade kernel6.18-tools-develUpgrade kernel6.18Upgrade kernel6.18-toolsUpgrade kernel6.18-modules-extraUpgrade kernel6.18-modules-extra-commonUpgrade kernel6.18-headersUpgrade kernel-livepatch-6.18.39-79.141Upgrade microvm-kernel6.18Upgrade perf6.18-debuginfo | Sep 7, 2026 | Jul 25, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Jul 28, 2026 | Jul 28, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1052-gkeopUpgrade linux-image-azure-6.8Upgrade linux-image-gkeop-6.8Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-gcp-7.0Upgrade linux-image-7.0.0-1013-oemUpgrade linux-image-gkeUpgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-fips-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-aws-64kUpgrade linux-image-realtimeUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-virtualUpgrade linux-image-6.8.0-1071-azureUpgrade linux-image-awsUpgrade linux-image-azure-fips-6.8Upgrade linux-image-6.8.0-1067-aws-64kUpgrade linux-image-oem-26.04bUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-1067-awsUpgrade linux-image-raspi-7.0Upgrade linux-image-raspi-realtimeUpgrade linux-image-generic-6.8Upgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-lowlatencyUpgrade linux-image-azure-fde-6.8Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-oracle-64k-7.0Upgrade linux-image-generic-64k-7.0Upgrade linux-image-oracleUpgrade linux-image-6.8.0-1071-gcp-64kUpgrade linux-image-ibm-6.8Upgrade linux-image-realtime-64kUpgrade linux-image-oracle-7.0Upgrade linux-image-realtime-64k-7.0Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-147-lowlatency-64kUpgrade linux-image-azure-lts-24.04Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-azure-lts-26.04Upgrade linux-image-7.0.0-31-genericUpgrade linux-image-6.8.0-147-generic-64kUpgrade linux-image-6.8.0-1067-ibmUpgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-aws-64k-6.8Upgrade linux-image-gcpUpgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-virtual-7.0Upgrade linux-image-fipsUpgrade linux-image-gcp-6.8Upgrade linux-image-6.8.0-1064-oracle-64kUpgrade linux-image-6.8.0-1066-gkeUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-6.8.0-1066-gke-64kUpgrade linux-image-6.8.0-147-fipsUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-1012-awsUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-gke-64kUpgrade linux-image-lowlatency-6.8Upgrade linux-image-oracle-6.8Upgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-6.8.0-1071-azure-fipsUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-realtime-7.0Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-gke-64k-6.8Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-azure-fipsUpgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-6.8.0-1069-azure-fdeUpgrade linux-image-generic-64kUpgrade linux-image-oracle-64kUpgrade linux-image-oem-7.0Upgrade linux-image-nvidia-bos-7.0Upgrade linux-image-nvidia-64kUpgrade linux-image-nvidiaUpgrade linux-image-ibm-7.0Upgrade linux-image-azureUpgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-6.8.0-147-genericUpgrade linux-image-6.8.0-1071-gcp-fipsUpgrade linux-image-6.8.0-1071-gcpUpgrade linux-image-virtual-6.8Upgrade linux-image-realtime-6.8.1Upgrade linux-image-nvidia-7.0Upgrade linux-image-gke-7.0Upgrade linux-image-gke-64k-7.0Upgrade linux-image-genericUpgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-6.8.1-1062-realtimeUpgrade linux-image-laptop-23.10Upgrade linux-image-azure-7.0Upgrade linux-image-gcp-fipsUpgrade linux-image-aws-7.0Upgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-raspiUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-generic-7.0Upgrade linux-image-generic-64k-6.8Upgrade linux-image-gcp-64kUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-aws-fipsUpgrade linux-image-6.8.0-147-lowlatencyUpgrade linux-image-6.8.0-1064-oracleUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-oem-26.04Upgrade linux-image-nvidia-64k-7.0Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-nvidia-bosUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-gke-6.8Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-6.8.0-1067-aws-fipsUpgrade linux-image-kvmUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-aws-fips-6.8Upgrade linux-image-gkeopUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-ibmUpgrade linux-image-oem-26.04aUpgrade linux-image-aws-6.8Upgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-nvidia-64k-hwe-26.04 | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 3, 2026 | Jul 25, 2026 |
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