GHSA-WQ92-R227-XXXP

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-05-27 15:33
VLAI
Details

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

staging: greybus: lights: avoid NULL deref

gb_lights_light_config() stores channel_count before allocating the channels array. If kcalloc() fails, gb_lights_release() iterates the non-zero count and dereferences light->channels, which is NULL.

Allocate channels first and only then publish channels_count so the cleanup path can't walk a NULL pointer.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-45978"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:14Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: greybus: lights: avoid NULL deref\n\ngb_lights_light_config() stores channel_count before allocating the\nchannels array. If kcalloc() fails, gb_lights_release() iterates the\nnon-zero count and dereferences light-\u003echannels, which is NULL.\n\nAllocate channels first and only then publish channels_count so the\ncleanup path can\u0027t walk a NULL pointer.",
  "id": "GHSA-wq92-r227-xxxp",
  "modified": "2026-05-27T15:33:19Z",
  "published": "2026-05-27T15:33:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45978"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/01b91cb3e748032fd96bbe0043812b426a52f091"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06162d85f830582da6e9e5fcf9c9504d6da9ae0b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3cbe694d235d96f628ec7dc6ae4d8bdddb768699"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65f2c608096d766540953d9b170d216aa3b5eb95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a118724d7641b832fa14323e2733e28ae4834552"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba5022162da63059bae36c4fd84d7031f582c71f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da46264a7016034a5bbbad034c012ef218b7d0af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/efcffd9a6ad8d190651498d5eda53bfc7cf683a7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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