{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64348","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T15:36:31.782Z","datePublished":"2026-07-25T08:50:08.983Z","dateUpdated":"2026-08-17T04:53:53.432Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T04:53:53.432Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/fotg210/fotg210-hcd.c","drivers/usb/host/ehci-sched.c"],"versions":[{"version":"8de98402652c01839ae321be6cb3054cf5735d83","lessThan":"b0d00d077f9738d215af9b50c74dffab7a1de19f","status":"affected","versionType":"git"},{"version":"8de98402652c01839ae321be6cb3054cf5735d83","lessThan":"be5004395dfd0b6ec310db359f887fa396fd0dd2","status":"affected","versionType":"git"},{"version":"8de98402652c01839ae321be6cb3054cf5735d83","lessThan":"8890699eea19027ef6e4f9cbcf27cba5e789793f","status":"affected","versionType":"git"},{"version":"8de98402652c01839ae321be6cb3054cf5735d83","lessThan":"6bc17a78a05671d303820224fb37ca339c1dc2cb","status":"affected","versionType":"git"},{"version":"8de98402652c01839ae321be6cb3054cf5735d83","lessThan":"4bb88aee6b868cbf73bf453f62497802f5fe4769","status":"affected","versionType":"git"},{"version":"8de98402652c01839ae321be6cb3054cf5735d83","lessThan":"b9399d25fbb34a05bbe76eeedd730f62ff2670e9","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/fotg210/fotg210-hcd.c","drivers/usb/host/ehci-sched.c"],"versions":[{"version":"2.6.15","status":"affected"},{"version":"0","lessThan":"2.6.15","status":"unaffected","versionType":"semver"},{"version":"5.10.261","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.96","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.39","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.4","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.15","versionEndExcluding":"5.10.261"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.15","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.15","versionEndExcluding":"6.12.96"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.15","versionEndExcluding":"6.18.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.15","versionEndExcluding":"7.1.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.15","versionEndExcluding":"7.2"}]}]}],"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"}}}}