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can: esd_usb: kill anchored URBs before freeing netdevs

Type: advisorySource: OSV1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-64585

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:CVE-2026-64585

Kernel

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
5.15.217

Source reference: /affected/1/ranges

6.1.178

Source reference: /affected/1/ranges

6.6.145

Source reference: /affected/1/ranges

6.12.97

Source reference: /affected/1/ranges

6.18.40

Source reference: /affected/1/ranges

7.1.5

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
        "type": "GIT",
        "events": [
          {
            "introduced": "96d8e90382dc336b5de401164597edfdc2e8d9f1"
          },
          {
            "fixed": "d12f6add48f2da15c8c8281961d3faad804c76cf"
          },
          {
            "fixed": "aa1d005927db38af783c1a4a8a00a39e0229ab2d"
          },
          {
            "fixed": "a02e1d8f191324583599544d54e59e6a2b74bb0e"
          },
          {
            "fixed": "a3314f10369df70925140f59bbe069718f65a0b9"
          },
          {
            "fixed": "765ba1c91823a296447528791b89a6504947fd5c"
          },
          {
            "fixed": "5832c55b3c824ba2fe9c36ac3c411baddcce053e"
          },
          {
            "fixed": "c43122fef328a70045fe7621c06de6b2b8e19264"
          }
        ]
      }
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64585.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "2.6.36"
          },
          {
            "fixed": "5.15.217"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "5.16.0"
          },
          {
            "fixed": "6.1.178"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.2.0"
          },
          {
            "fixed": "6.6.145"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.7.0"
          },
          {
            "fixed": "6.12.97"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.13.0"
          },
          {
            "fixed": "6.18.40"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.19.0"
          },
          {
            "fixed": "7.1.5"
          }
        ]
      }
    ],
    "package": {
      "name": "Kernel",
      "ecosystem": "Linux"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64585.json"
    }
  }
]
Related CVEs
CVE-2026-64585

Source reference: /id

Publisher severity

No explicit severity was provided.

Event
#50741 · Revision 1
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Publisher date
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