ghsa-45h6-97cw-2x6c
Vulnerability from github
Published
2025-09-05 18:31
Modified
2025-09-05 18:31
Details

In the Linux kernel, the following vulnerability has been resolved:

media: usbtv: Lock resolution while streaming

When an program is streaming (ffplay) and another program (qv4l2) changes the TV standard from NTSC to PAL, the kernel crashes due to trying to copy to unmapped memory.

Changing from NTSC to PAL increases the resolution in the usbtv struct, but the video plane buffer isn't adjusted, so it overflows.

[hverkuil: call vb2_is_busy instead of vb2_is_streaming]

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39714"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-05T18:15:48Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: usbtv: Lock resolution while streaming\n\nWhen an program is streaming (ffplay) and another program (qv4l2)\nchanges the TV standard from NTSC to PAL, the kernel crashes due to trying\nto copy to unmapped memory.\n\nChanging from NTSC to PAL increases the resolution in the usbtv struct,\nbut the video plane buffer isn\u0027t adjusted, so it overflows.\n\n[hverkuil: call vb2_is_busy instead of vb2_is_streaming]",
  "id": "GHSA-45h6-97cw-2x6c",
  "modified": "2025-09-05T18:31:27Z",
  "published": "2025-09-05T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39714"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d83d0b5ae5045a7a246ed116b5f6c688a12f9e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5427dda195d6baf23028196fd55a0c90f66ffa61"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e40e0bb778907b2441bff68d73c3eb6b6cd319f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f886d21e235c4bd038cb20f6696084304197ab3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c35e7c7a004ef379a1ae7c7486d4829419acad1d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3d75524e10021aa5c223d94da4996640aed46c0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee7bade8b9244834229b12b6e1e724939bedd484"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef9b3c22405192afaa279077ddd45a51db90b83d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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