{"id":"CVE-2026-64585","title":"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_…","summary":"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_…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","published":"2026-08-06","updated":"2026-08-08","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-64585","references":[{"url":"https://git.kernel.org/stable/c/5832c55b3c824ba2fe9c36ac3c411baddcce053e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/765ba1c91823a296447528791b89a6504947fd5c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a02e1d8f191324583599544d54e59e6a2b74bb0e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a3314f10369df70925140f59bbe069718f65a0b9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/aa1d005927db38af783c1a4a8a00a39e0229ab2d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c43122fef328a70045fe7621c06de6b2b8e19264","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.0012,"epssPercentile":0.02126,"ingestedAt":"2026-08-08T21:30:13.149Z","slug":"CVE-2026-64585","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}