{"api_version":"1","generated_at":"2026-08-07T16:00:21+00:00","cve":"CVE-2026-64585","urls":{"html":"https://cve.report/CVE-2026-64585","api":"https://cve.report/api/cve/CVE-2026-64585.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64585","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64585"},"summary":{"title":"can: esd_usb: kill anchored URBs before freeing netdevs","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: esd_usb: kill anchored URBs before freeing netdevs\n\nesd_usb_disconnect() frees each CAN netdev with free_candev() inside\nits per-netdev loop and only calls unlink_all_urbs(dev) afterwards.\nThe per-netdev private data (struct esd_usb_net_priv) is embedded in\nthe net_device allocation returned by alloc_candev(), so once\nfree_candev() has run, dev->nets[i] points to freed memory.\nunlink_all_urbs() then dereferences the freed dev->nets[i] to kill the\nper-netdev TX anchor (usb_kill_anchored_urbs(&priv->tx_submitted)),\nclear active_tx_jobs, and reset priv->tx_contexts[].\n\nReorder the teardown so the anchored URBs are killed before the netdevs\nare freed, matching other CAN/USB drivers in the same directory such as\nems_usb, usb_8dev and mcba_usb, which unregister, then unlink, then\nfree: unregister the netdevs first (which stops their TX queues), call\nunlink_all_urbs(dev) once, then free the netdevs.\n\nThis issue was found by an in-house static analysis tool.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-06 08:16:33","updated_at":"2026-08-06 08:16:33"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/aa1d005927db38af783c1a4a8a00a39e0229ab2d","name":"https://git.kernel.org/stable/c/aa1d005927db38af783c1a4a8a00a39e0229ab2d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c43122fef328a70045fe7621c06de6b2b8e19264","name":"https://git.kernel.org/stable/c/c43122fef328a70045fe7621c06de6b2b8e19264","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a3314f10369df70925140f59bbe069718f65a0b9","name":"https://git.kernel.org/stable/c/a3314f10369df70925140f59bbe069718f65a0b9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5832c55b3c824ba2fe9c36ac3c411baddcce053e","name":"https://git.kernel.org/stable/c/5832c55b3c824ba2fe9c36ac3c411baddcce053e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a02e1d8f191324583599544d54e59e6a2b74bb0e","name":"https://git.kernel.org/stable/c/a02e1d8f191324583599544d54e59e6a2b74bb0e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/765ba1c91823a296447528791b89a6504947fd5c","name":"https://git.kernel.org/stable/c/765ba1c91823a296447528791b89a6504947fd5c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64585","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64585","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 aa1d005927db38af783c1a4a8a00a39e0229ab2d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 a02e1d8f191324583599544d54e59e6a2b74bb0e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 a3314f10369df70925140f59bbe069718f65a0b9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 765ba1c91823a296447528791b89a6504947fd5c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 5832c55b3c824ba2fe9c36ac3c411baddcce053e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 c43122fef328a70045fe7621c06de6b2b8e19264 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.36","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.36 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* 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 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc4 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64585","cve":"CVE-2026-64585","epss":"0.001610000","percentile":"0.056810000","score_date":"2026-08-06","updated_at":"2026-08-07 00:14:18"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/can/usb/esd_usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"aa1d005927db38af783c1a4a8a00a39e0229ab2d","status":"affected","version":"96d8e90382dc336b5de401164597edfdc2e8d9f1","versionType":"git"},{"lessThan":"a02e1d8f191324583599544d54e59e6a2b74bb0e","status":"affected","version":"96d8e90382dc336b5de401164597edfdc2e8d9f1","versionType":"git"},{"lessThan":"a3314f10369df70925140f59bbe069718f65a0b9","status":"affected","version":"96d8e90382dc336b5de401164597edfdc2e8d9f1","versionType":"git"},{"lessThan":"765ba1c91823a296447528791b89a6504947fd5c","status":"affected","version":"96d8e90382dc336b5de401164597edfdc2e8d9f1","versionType":"git"},{"lessThan":"5832c55b3c824ba2fe9c36ac3c411baddcce053e","status":"affected","version":"96d8e90382dc336b5de401164597edfdc2e8d9f1","versionType":"git"},{"lessThan":"c43122fef328a70045fe7621c06de6b2b8e19264","status":"affected","version":"96d8e90382dc336b5de401164597edfdc2e8d9f1","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/can/usb/esd_usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.36"},{"lessThan":"2.6.36","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc4","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"2.6.36","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"2.6.36","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"2.6.36","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"2.6.36","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"2.6.36","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc4","versionStartIncluding":"2.6.36","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: esd_usb: kill anchored URBs before freeing netdevs\n\nesd_usb_disconnect() frees each CAN netdev with free_candev() inside\nits per-netdev loop and only calls unlink_all_urbs(dev) afterwards.\nThe per-netdev private data (struct esd_usb_net_priv) is embedded in\nthe net_device allocation returned by alloc_candev(), so once\nfree_candev() has run, dev->nets[i] points to freed memory.\nunlink_all_urbs() then dereferences the freed dev->nets[i] to kill the\nper-netdev TX anchor (usb_kill_anchored_urbs(&priv->tx_submitted)),\nclear active_tx_jobs, and reset priv->tx_contexts[].\n\nReorder the teardown so the anchored URBs are killed before the netdevs\nare freed, matching other CAN/USB drivers in the same directory such as\nems_usb, usb_8dev and mcba_usb, which unregister, then unlink, then\nfree: unregister the netdevs first (which stops their TX queues), call\nunlink_all_urbs(dev) once, then free the netdevs.\n\nThis issue was found by an in-house static analysis tool."}],"providerMetadata":{"dateUpdated":"2026-08-06T07:06:26.556Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/aa1d005927db38af783c1a4a8a00a39e0229ab2d"},{"url":"https://git.kernel.org/stable/c/a02e1d8f191324583599544d54e59e6a2b74bb0e"},{"url":"https://git.kernel.org/stable/c/a3314f10369df70925140f59bbe069718f65a0b9"},{"url":"https://git.kernel.org/stable/c/765ba1c91823a296447528791b89a6504947fd5c"},{"url":"https://git.kernel.org/stable/c/5832c55b3c824ba2fe9c36ac3c411baddcce053e"},{"url":"https://git.kernel.org/stable/c/c43122fef328a70045fe7621c06de6b2b8e19264"}],"title":"can: esd_usb: kill anchored URBs before freeing netdevs","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64585","datePublished":"2026-08-06T07:06:26.556Z","dateReserved":"2026-07-19T15:36:31.798Z","dateUpdated":"2026-08-06T07:06:26.556Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-06 08:16:33","lastModifiedDate":"2026-08-06 08:16:33","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64585","Ordinal":"1","Title":"can: esd_usb: kill anchored URBs before freeing netdevs","CVE":"CVE-2026-64585","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64585","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: esd_usb: kill anchored URBs before freeing netdevs\n\nesd_usb_disconnect() frees each CAN netdev with free_candev() inside\nits per-netdev loop and only calls unlink_all_urbs(dev) afterwards.\nThe per-netdev private data (struct esd_usb_net_priv) is embedded in\nthe net_device allocation returned by alloc_candev(), so once\nfree_candev() has run, dev->nets[i] points to freed memory.\nunlink_all_urbs() then dereferences the freed dev->nets[i] to kill the\nper-netdev TX anchor (usb_kill_anchored_urbs(&priv->tx_submitted)),\nclear active_tx_jobs, and reset priv->tx_contexts[].\n\nReorder the teardown so the anchored URBs are killed before the netdevs\nare freed, matching other CAN/USB drivers in the same directory such as\nems_usb, usb_8dev and mcba_usb, which unregister, then unlink, then\nfree: unregister the netdevs first (which stops their TX queues), call\nunlink_all_urbs(dev) once, then free the netdevs.\n\nThis issue was found by an in-house static analysis tool.","Type":"Description","Title":"can: esd_usb: kill anchored URBs before freeing netdevs"}]}}}