CVE-2025-40053 (GCVE-0-2025-40053)
Vulnerability from cvelistv5
Published
2025-10-28 11:48
Modified
2025-10-29 13:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: dlink: handle copy_thresh allocation failure The driver did not handle failure of `netdev_alloc_skb_ip_align()`. If the allocation failed, dereferencing `skb->protocol` could lead to a NULL pointer dereference. This patch tries to allocate `skb`. If the allocation fails, it falls back to the normal path. Tested-on: D-Link DGE-550T Rev-A3
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/dlink/dl2k.c"
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              "status": "unaffected",
              "version": "6.17.3",
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              "status": "unaffected",
              "version": "6.18-rc1",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dlink: handle copy_thresh allocation failure\n\nThe driver did not handle failure of `netdev_alloc_skb_ip_align()`.\nIf the allocation failed, dereferencing `skb-\u003eprotocol` could lead to\na NULL pointer dereference.\n\nThis patch tries to allocate `skb`. If the allocation fails, it falls\nback to the normal path.\n\nTested-on: D-Link DGE-550T Rev-A3"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-29T13:19:52.908Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/84fd710a704f3d53d4120e452e86cea558cf73a8"
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        },
        {
          "url": "https://git.kernel.org/stable/c/8169a6011c5fecc6cb1c3654c541c567d3318de8"
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      ],
      "title": "net: dlink: handle copy_thresh allocation failure",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40053",
    "datePublished": "2025-10-28T11:48:28.444Z",
    "dateReserved": "2025-04-16T07:20:57.157Z",
    "dateUpdated": "2025-10-29T13:19:52.908Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40053\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-28T12:15:39.510\",\"lastModified\":\"2025-10-30T15:05:32.197\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: dlink: handle copy_thresh allocation failure\\n\\nThe driver did not handle failure of `netdev_alloc_skb_ip_align()`.\\nIf the allocation failed, dereferencing `skb-\u003eprotocol` could lead to\\na NULL pointer dereference.\\n\\nThis patch tries to allocate `skb`. If the allocation fails, it falls\\nback to the normal path.\\n\\nTested-on: D-Link DGE-550T Rev-A3\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/5aa9b885602811a026a3f45c92ea2b4b04c54f09\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7ed5010fef0930f4322d620052edc854ef3ec41f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8169a6011c5fecc6cb1c3654c541c567d3318de8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/84fd710a704f3d53d4120e452e86cea558cf73a8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9d49e4b14609e1a20d931e718962c4b6b5485174\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ea87151df398d407a632c7bf63013290f01c5009\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fd7b6b2c920d7fd370a612be416a904d6e1ebe55\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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