{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-89870",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-89870"
  ],
  "published": "2026-09-16T10:32:03Z",
  "summary": "media: zoran: Avoid freeing a registered video_device twice",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: zoran: Avoid freeing a registered video_device twice\n\nzoran_init_video_device() installs zoran_vdev_release() as the\nvideo_device release callback through zoran_template. After\nvideo_register_device() succeeds, video_unregister_device() drops the\nregistered video_device reference and the V4L2 core eventually invokes\nthat release callback, which kfree()s the video_device.\n\nzoran_exit_video_devices() called video_unregister_device() and then\nkfree(zr->video_dev), so device teardown could free the same\nvideo_device twice.\n\nRemove the direct kfree() and clear the cached pointer after\nunregistering. The pre-registration failure path keeps its manual free\nbecause the video_device was not registered there.\n\nThis issue was found by a static analysis checker and confirmed by\nmanual source review.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.188",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-89870"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3ad6cf27505017a6794f5f96c31218c2291e951b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c4acac8cdc005b2d14b6cef5e215d264212857f3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4d99d8d0d895489064783601a516bd45812fa992"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f1c4f3885df1f09bcab5296d86834d104f865e86"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/672dbccf4351370dad002d3c78dbb29ca1588f22"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0735e0b5a96761a9ce277a238e834008ad92a0a5"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-16T14:40:32Z"
  }
}