Answer in brief
CVE-2026-64348 records a High severity (CVSS 7.8) 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.
CVSS is 7.8. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:2.6.15:-:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:2.6.15:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:2.6.15:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:2.6.15:rc6:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:2.6.15:rc7:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:* | Not reported | Not reported |
| 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
Sep 3, 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.