--- cve: "CVE-2026-64348" severity: "LOW" cvss: 3.1 epss: "17%" vendor: "Linux" kev: false exploited: false published: "2026-07-25 10:17:17" tags: [cve, security, low] source: tsecurity.de CVE-Dossier exported: "2026-09-16T23:26:59+02:00" --- # CVE-2026-64348 > 3.1 LOW ## Beschreibung 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. ## Patch verfügbar (OSV) - Kernel ≥ 5.10.261 - Kernel ≥ 6.6.145 - Kernel ≥ 6.12.96 - Kernel ≥ 6.18.39 - Kernel ≥ 7.1.4 ## Referenzen - - - - - - --- _Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-64348) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_