can: esd_usb: kill anchored URBs before freeing netdevs

{
  "id": "ec9c2a90d8d208838899b0c38fec0cf5c44ec5a9d91ad1a8d33be18135c288d0",
  "url": "https://osv.dev/vulnerability/CVE-2026-64585",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "can: esd_usb: kill anchored URBs before freeing netdevs",
    "summary": "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.",
    "evidence": "osv:CVE-2026-64585",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.217",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.178",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.145",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.97",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.40",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-64585",
      "aliases": [
        "CVE-2026-64585"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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                  "fixed": "d12f6add48f2da15c8c8281961d3faad804c76cf"
                },
                {
                  "fixed": "aa1d005927db38af783c1a4a8a00a39e0229ab2d"
                },
                {
                  "fixed": "a02e1d8f191324583599544d54e59e6a2b74bb0e"
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                {
                  "fixed": "a3314f10369df70925140f59bbe069718f65a0b9"
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                {
                  "fixed": "765ba1c91823a296447528791b89a6504947fd5c"
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                  "fixed": "5832c55b3c824ba2fe9c36ac3c411baddcce053e"
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                  "fixed": "c43122fef328a70045fe7621c06de6b2b8e19264"
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              ]
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64585.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "2.6.36"
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                  "fixed": "5.15.217"
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              "type": "ECOSYSTEM",
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                  "introduced": "5.16.0"
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                  "introduced": "6.13.0"
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                  "introduced": "6.19.0"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64585.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.368162737Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/5832c55b3c824ba2fe9c36ac3c411baddcce053e",
        "https://git.kernel.org/stable/c/765ba1c91823a296447528791b89a6504947fd5c",
        "https://git.kernel.org/stable/c/a02e1d8f191324583599544d54e59e6a2b74bb0e",
        "https://git.kernel.org/stable/c/a3314f10369df70925140f59bbe069718f65a0b9",
        "https://git.kernel.org/stable/c/aa1d005927db38af783c1a4a8a00a39e0229ab2d",
        "https://git.kernel.org/stable/c/c43122fef328a70045fe7621c06de6b2b8e19264",
        "https://git.kernel.org/stable/c/d12f6add48f2da15c8c8281961d3faad804c76cf",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64585.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-64585",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64585.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-64585",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491726,
  "published_at": "2026-08-06T07:06:26.556+00:00"
}