CVE-2026-64585can: esd_usb: kill anchored URBs before freeing netdevs
- 7.8HighCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 18 days later
· 18 days later
Published
- 17 days later
· 17 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 – < d12f6add48f2da15c8c8281961d3faad804c76cf
- affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 – < aa1d005927db38af783c1a4a8a00a39e0229ab2d
- affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 – < a02e1d8f191324583599544d54e59e6a2b74bb0e
- affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 – < a3314f10369df70925140f59bbe069718f65a0b9
- affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 – < 765ba1c91823a296447528791b89a6504947fd5c
- affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 – < 5832c55b3c824ba2fe9c36ac3c411baddcce053e
- affected 96d8e90382dc336b5de401164597edfdc2e8d9f1 – < c43122fef328a70045fe7621c06de6b2b8e19264
- affected 2.6.36
- unaffected < 2.6.36
- unaffected 5.15.217 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References7
- https://git.kernel.org/stable/c/d12f6add48f2da15c8c8281961d3faad804c76cf (opens in a new tab)
- https://git.kernel.org/stable/c/aa1d005927db38af783c1a4a8a00a39e0229ab2d (opens in a new tab)
- https://git.kernel.org/stable/c/a02e1d8f191324583599544d54e59e6a2b74bb0e (opens in a new tab)
- https://git.kernel.org/stable/c/a3314f10369df70925140f59bbe069718f65a0b9 (opens in a new tab)
- https://git.kernel.org/stable/c/765ba1c91823a296447528791b89a6504947fd5c (opens in a new tab)
- https://git.kernel.org/stable/c/5832c55b3c824ba2fe9c36ac3c411baddcce053e (opens in a new tab)
- https://git.kernel.org/stable/c/c43122fef328a70045fe7621c06de6b2b8e19264 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-53772 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-64585)Record last updated .