{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  media: airspy: use vb2_video_unregister_device() on disconnect to fix NULL deref  airspy_disconnect() clears s-\u003eudev under v4l2_lock, but airspy_stop_streaming() unconditionally calls airspy_ctrl_msg() and airspy_free_stream_bufs() afterwards. If a streaming user closes the device after disconnect, stop_streaming() runs and dereferences the NULL s-\u003eudev:    airspy_stop_streaming()     airspy_ctrl_msg(s, CMD_RECEIVER_MODE, 0, 0, NULL, 0)       usb_sndctrlpipe(s-\u003eudev, 0)         /* NULL deref */     airspy_free_stream_bufs(s)       usb_free_coherent(s-\u003eudev, ...)     /* NULL deref */  The airspy driver uses vb2_fop_release() in its file_operations, so replace video_unregister_device(\u0026s-\u003evdev) with vb2_video_unregister_device(\u0026s-\u003evdev) and move it before clearing s-\u003eudev. vb2_video_unregister_device() releases the vb2 queue, which synchronously runs airspy_stop_streaming() if streaming is active, so the URBs, coherent DMA stream buffers and the hardware stop control message all execute while s-\u003eudev is still valid.  vb2_video_unregister_device() locks vdev-\u003equeue-\u003elock (vb_queue_lock) internally, and stop_streaming() locks v4l2_lock, so the previous outer mutex_lock(\u0026s-\u003evb_queue_lock) / mutex_lock(\u0026s-\u003ev4l2_lock) pair around the unregister sequence would self-deadlock and has been removed. A short v4l2_lock critical section around s-\u003eudev = NULL remains so any ioctl path that still holds the file descriptor sees coherent state.  Issue identified by automated review of the INV-003 series at https://sashiko.dev/",
  "id": "DEBIAN-CVE-2026-89901",
  "modified": "2026-09-17T04:47:38.979477815Z",
  "published": "2026-09-16T11:16:59.003Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-89901"
    }
  ],
  "upstream": [
    "CVE-2026-89901"
  ]
}