FKIE_CVE-2026-45978

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48
Severity
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/01b91cb3e748032fd96bbe0043812b426a52f091
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/06162d85f830582da6e9e5fcf9c9504d6da9ae0b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3cbe694d235d96f628ec7dc6ae4d8bdddb768699
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/65f2c608096d766540953d9b170d216aa3b5eb95
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a118724d7641b832fa14323e2733e28ae4834552
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ba5022162da63059bae36c4fd84d7031f582c71f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/da46264a7016034a5bbbad034c012ef218b7d0af
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/efcffd9a6ad8d190651498d5eda53bfc7cf683a7
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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": "CVE-2026-45978",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:14.903",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/01b91cb3e748032fd96bbe0043812b426a52f091"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/06162d85f830582da6e9e5fcf9c9504d6da9ae0b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3cbe694d235d96f628ec7dc6ae4d8bdddb768699"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/65f2c608096d766540953d9b170d216aa3b5eb95"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a118724d7641b832fa14323e2733e28ae4834552"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ba5022162da63059bae36c4fd84d7031f582c71f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/da46264a7016034a5bbbad034c012ef218b7d0af"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/efcffd9a6ad8d190651498d5eda53bfc7cf683a7"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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