Answer in brief
CVE-2026-64348 records a Unknown severity vulnerability in usb: free iso schedules on failed submit. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8de98402652c01839ae321be6cb3054cf5735d83 <b0d00d077f9738d215af9b50c74dffab7a1de19f || >=8de98402652c01839ae321be6cb3054cf5735d83 <be5004395dfd0b6ec310db359f887fa396fd0dd2 || >=8de98402652c01839ae321be6cb3054cf5735d83 <8890699eea19027ef6e4f9cbcf27cba5e789793f || >=8de98402652c01839ae321be6cb3054cf5735d83 <6bc17a78a05671d303820224fb37ca339c1dc2cb || >=8de98402652c01839ae321be6cb3054cf5735d83 <4bb88aee6b868cbf73bf453f62497802f5fe4769 || >=8de98402652c01839ae321be6cb3054cf5735d83 <b9399d25fbb34a05bbe76eeedd730f62ff2670e9 | b0d00d077f9738d215af9b50c74dffab7a1de19f, be5004395dfd0b6ec310db359f887fa396fd0dd2, 8890699eea19027ef6e4f9cbcf27cba5e789793f, 6bc17a78a05671d303820224fb37ca339c1dc2cb, 4bb88aee6b868cbf73bf453f62497802f5fe4769, b9399d25fbb34a05bbe76eeedd730f62ff2670e9 |
| Linux/Linuxgeneric | 2.6.15 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-64348 records a Unknown severity vulnerability in usb: free iso schedules on failed submit. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8de98402652c01839ae321be6cb3054cf5735d83 <b0d00d077f9738d215af9b50c74dffab7a1de19f || >=8de98402652c01839ae321be6cb3054cf5735d83 <be5004395dfd0b6ec310db359f887fa396fd0dd2 || >=8de98402652c01839ae321be6cb3054cf5735d83 <8890699eea19027ef6e4f9cbcf27cba5e789793f || >=8de98402652c01839ae321be6cb3054cf5735d83 <6bc17a78a05671d303820224fb37ca339c1dc2cb || >=8de98402652c01839ae321be6cb3054cf5735d83 <4bb88aee6b868cbf73bf453f62497802f5fe4769 || >=8de98402652c01839ae321be6cb3054cf5735d83 <b9399d25fbb34a05bbe76eeedd730f62ff2670e9 | b0d00d077f9738d215af9b50c74dffab7a1de19f, be5004395dfd0b6ec310db359f887fa396fd0dd2, 8890699eea19027ef6e4f9cbcf27cba5e789793f, 6bc17a78a05671d303820224fb37ca339c1dc2cb, 4bb88aee6b868cbf73bf453f62497802f5fe4769, b9399d25fbb34a05bbe76eeedd730f62ff2670e9 |
| Linux/Linuxgeneric | 2.6.15 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.