FKIE_CVE-2026-23019

Vulnerability from fkie_nvd - Published: 2026-01-31 12:16 - Updated: 2026-01-31 12:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: marvell: prestera: fix NULL dereference on devlink_alloc() failure devlink_alloc() may return NULL on allocation failure, but prestera_devlink_alloc() unconditionally calls devlink_priv() on the returned pointer. This leads to a NULL pointer dereference if devlink allocation fails. Add a check for a NULL devlink pointer and return NULL early to avoid the crash.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/325aea74be7e192b5c947c782da23b0d19a5fda2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/326a4b7e61d01db3507f71c8bb5e85362f607064
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3950054c9512add0cc79ab7e72b6d2f9f675e25b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8a4333b2818f0d853b43e139936c20659366e4a0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/94e070cd50790317fba7787ae6006934b7edcb6f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a428e0da1248c353557970848994f35fd3f005e2
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: marvell: prestera: fix NULL dereference on devlink_alloc() failure\n\ndevlink_alloc() may return NULL on allocation failure, but\nprestera_devlink_alloc() unconditionally calls devlink_priv() on\nthe returned pointer.\n\nThis leads to a NULL pointer dereference if devlink allocation fails.\nAdd a check for a NULL devlink pointer and return NULL early to avoid\nthe crash."
    }
  ],
  "id": "CVE-2026-23019",
  "lastModified": "2026-01-31T12:16:05.207",
  "metrics": {},
  "published": "2026-01-31T12:16:05.207",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/325aea74be7e192b5c947c782da23b0d19a5fda2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/326a4b7e61d01db3507f71c8bb5e85362f607064"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3950054c9512add0cc79ab7e72b6d2f9f675e25b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8a4333b2818f0d853b43e139936c20659366e4a0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/94e070cd50790317fba7787ae6006934b7edcb6f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a428e0da1248c353557970848994f35fd3f005e2"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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