can: esd_usb: kill anchored URBs before freeing netdevs
Summary
| CVE | CVE-2026-64585 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-06 08:16:33 UTC |
| Updated | 2026-08-06 08:16:33 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: can: esd_usb: kill anchored URBs before freeing netdevs esd_usb_disconnect() frees each CAN netdev with free_candev() inside its per-netdev loop and only calls unlink_all_urbs(dev) afterwards. The per-netdev private data (struct esd_usb_net_priv) is embedded in the net_device allocation returned by alloc_candev(), so once free_candev() has run, dev->nets[i] points to freed memory. unlink_all_urbs() then dereferences the freed dev->nets[i] to kill the per-netdev TX anchor (usb_kill_anchored_urbs(&priv->tx_submitted)), clear active_tx_jobs, and reset priv->tx_contexts[]. Reorder the teardown so the anchored URBs are killed before the netdevs are freed, matching other CAN/USB drivers in the same directory such as ems_usb, usb_8dev and mcba_usb, which unregister, then unlink, then free: unregister the netdevs first (which stops their TX queues), call unlink_all_urbs(dev) once, then free the netdevs. This issue was found by an in-house static analysis tool. |
Risk And Classification
EPSS: 0.001610000 probability, percentile 0.056810000 (date 2026-08-06)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 aa1d005927db38af783c1a4a8a00a39e0229ab2d git | Not specified |
| CNA | Linux | Linux | affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 a02e1d8f191324583599544d54e59e6a2b74bb0e git | Not specified |
| CNA | Linux | Linux | affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 a3314f10369df70925140f59bbe069718f65a0b9 git | Not specified |
| CNA | Linux | Linux | affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 765ba1c91823a296447528791b89a6504947fd5c git | Not specified |
| CNA | Linux | Linux | affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 5832c55b3c824ba2fe9c36ac3c411baddcce053e git | Not specified |
| CNA | Linux | Linux | affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 c43122fef328a70045fe7621c06de6b2b8e19264 git | Not specified |
| CNA | Linux | Linux | affected 2.6.36 | Not specified |
| CNA | Linux | Linux | unaffected 2.6.36 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.178 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.145 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.97 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.40 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.5 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2-rc4 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/aa1d005927db38af783c1a4a8a00a39e0229ab2d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c43122fef328a70045fe7621c06de6b2b8e19264 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a3314f10369df70925140f59bbe069718f65a0b9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/5832c55b3c824ba2fe9c36ac3c411baddcce053e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a02e1d8f191324583599544d54e59e6a2b74bb0e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/765ba1c91823a296447528791b89a6504947fd5c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.