{"api_version":"1","generated_at":"2026-07-27T01:59:42+00:00","cve":"CVE-2026-64348","urls":{"html":"https://cve.report/CVE-2026-64348","api":"https://cve.report/api/cve/CVE-2026-64348.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64348","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64348"},"summary":{"title":"usb: free iso schedules on failed submit","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: free iso schedules on failed submit\n\nEHCI and FOTG210 isochronous submits build an ehci_iso_sched before\nlinking the URB to the endpoint queue, and keep the staged schedule in\nurb->hcpriv until iso_stream_schedule() and the link helpers consume it.\nIf the controller is no longer accessible, or usb_hcd_link_urb_to_ep()\nfails, submit jumps to done_not_linked before that handoff happens and\nleaks the staged schedule still attached to urb->hcpriv.\n\nFree the staged schedule from done_not_linked when submit fails before\nthe URB is linked and clear urb->hcpriv after the free.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1.1.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have an\nEHCI host controller with a USB isochronous device to test with, no\nruntime testing was able to be performed.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:17","updated_at":"2026-07-25 10:17:17"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/be5004395dfd0b6ec310db359f887fa396fd0dd2","name":"https://git.kernel.org/stable/c/be5004395dfd0b6ec310db359f887fa396fd0dd2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b9399d25fbb34a05bbe76eeedd730f62ff2670e9","name":"https://git.kernel.org/stable/c/b9399d25fbb34a05bbe76eeedd730f62ff2670e9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b0d00d077f9738d215af9b50c74dffab7a1de19f","name":"https://git.kernel.org/stable/c/b0d00d077f9738d215af9b50c74dffab7a1de19f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6bc17a78a05671d303820224fb37ca339c1dc2cb","name":"https://git.kernel.org/stable/c/6bc17a78a05671d303820224fb37ca339c1dc2cb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8890699eea19027ef6e4f9cbcf27cba5e789793f","name":"https://git.kernel.org/stable/c/8890699eea19027ef6e4f9cbcf27cba5e789793f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4bb88aee6b868cbf73bf453f62497802f5fe4769","name":"https://git.kernel.org/stable/c/4bb88aee6b868cbf73bf453f62497802f5fe4769","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64348","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64348","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8de98402652c01839ae321be6cb3054cf5735d83 b0d00d077f9738d215af9b50c74dffab7a1de19f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8de98402652c01839ae321be6cb3054cf5735d83 be5004395dfd0b6ec310db359f887fa396fd0dd2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8de98402652c01839ae321be6cb3054cf5735d83 8890699eea19027ef6e4f9cbcf27cba5e789793f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8de98402652c01839ae321be6cb3054cf5735d83 6bc17a78a05671d303820224fb37ca339c1dc2cb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8de98402652c01839ae321be6cb3054cf5735d83 4bb88aee6b868cbf73bf453f62497802f5fe4769 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8de98402652c01839ae321be6cb3054cf5735d83 b9399d25fbb34a05bbe76eeedd730f62ff2670e9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.261 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.96 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64348","cve":"CVE-2026-64348","epss":"0.001730000","percentile":"0.069240000","score_date":"2026-07-26","updated_at":"2026-07-27 00:02:02"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/usb/fotg210/fotg210-hcd.c","drivers/usb/host/ehci-sched.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b0d00d077f9738d215af9b50c74dffab7a1de19f","status":"affected","version":"8de98402652c01839ae321be6cb3054cf5735d83","versionType":"git"},{"lessThan":"be5004395dfd0b6ec310db359f887fa396fd0dd2","status":"affected","version":"8de98402652c01839ae321be6cb3054cf5735d83","versionType":"git"},{"lessThan":"8890699eea19027ef6e4f9cbcf27cba5e789793f","status":"affected","version":"8de98402652c01839ae321be6cb3054cf5735d83","versionType":"git"},{"lessThan":"6bc17a78a05671d303820224fb37ca339c1dc2cb","status":"affected","version":"8de98402652c01839ae321be6cb3054cf5735d83","versionType":"git"},{"lessThan":"4bb88aee6b868cbf73bf453f62497802f5fe4769","status":"affected","version":"8de98402652c01839ae321be6cb3054cf5735d83","versionType":"git"},{"lessThan":"b9399d25fbb34a05bbe76eeedd730f62ff2670e9","status":"affected","version":"8de98402652c01839ae321be6cb3054cf5735d83","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/fotg210/fotg210-hcd.c","drivers/usb/host/ehci-sched.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.15"},{"lessThan":"2.6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"2.6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"2.6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.96","versionStartIncluding":"2.6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"2.6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"2.6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc3","versionStartIncluding":"2.6.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: free iso schedules on failed submit\n\nEHCI and FOTG210 isochronous submits build an ehci_iso_sched before\nlinking the URB to the endpoint queue, and keep the staged schedule in\nurb->hcpriv until iso_stream_schedule() and the link helpers consume it.\nIf the controller is no longer accessible, or usb_hcd_link_urb_to_ep()\nfails, submit jumps to done_not_linked before that handoff happens and\nleaks the staged schedule still attached to urb->hcpriv.\n\nFree the staged schedule from done_not_linked when submit fails before\nthe URB is linked and clear urb->hcpriv after the free.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1.1.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have an\nEHCI host controller with a USB isochronous device to test with, no\nruntime testing was able to be performed."}],"providerMetadata":{"dateUpdated":"2026-07-25T08:50:08.983Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/b0d00d077f9738d215af9b50c74dffab7a1de19f"},{"url":"https://git.kernel.org/stable/c/be5004395dfd0b6ec310db359f887fa396fd0dd2"},{"url":"https://git.kernel.org/stable/c/8890699eea19027ef6e4f9cbcf27cba5e789793f"},{"url":"https://git.kernel.org/stable/c/6bc17a78a05671d303820224fb37ca339c1dc2cb"},{"url":"https://git.kernel.org/stable/c/4bb88aee6b868cbf73bf453f62497802f5fe4769"},{"url":"https://git.kernel.org/stable/c/b9399d25fbb34a05bbe76eeedd730f62ff2670e9"}],"title":"usb: free iso schedules on failed submit","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64348","datePublished":"2026-07-25T08:50:08.983Z","dateReserved":"2026-07-19T15:36:31.782Z","dateUpdated":"2026-07-25T08:50:08.983Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:17","lastModifiedDate":"2026-07-25 10:17:17","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64348","Ordinal":"1","Title":"usb: free iso schedules on failed submit","CVE":"CVE-2026-64348","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64348","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: free iso schedules on failed submit\n\nEHCI and FOTG210 isochronous submits build an ehci_iso_sched before\nlinking the URB to the endpoint queue, and keep the staged schedule in\nurb->hcpriv until iso_stream_schedule() and the link helpers consume it.\nIf the controller is no longer accessible, or usb_hcd_link_urb_to_ep()\nfails, submit jumps to done_not_linked before that handoff happens and\nleaks the staged schedule still attached to urb->hcpriv.\n\nFree the staged schedule from done_not_linked when submit fails before\nthe URB is linked and clear urb->hcpriv after the free.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1.1.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have an\nEHCI host controller with a USB isochronous device to test with, no\nruntime testing was able to be performed.","Type":"Description","Title":"usb: free iso schedules on failed submit"}]}}}