github - ghsa-wj97-6gr4-gfmq

ghsa-wj97-6gr4-gfmq

Vulnerability from github

Published

2025-07-25 15:30

Modified

2025-11-19 18:31

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

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

net: netpoll: Initialize UDP checksum field before checksumming

commit f1fce08e63fe ("netpoll: Eliminate redundant assignment") removed the initialization of the UDP checksum, which was wrong and broke netpoll IPv6 transmission due to bad checksumming.

udph->check needs to be set before calling csum_ipv6_magic().

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38432"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-25T15:15:28Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: netpoll: Initialize UDP checksum field before checksumming\n\ncommit f1fce08e63fe (\"netpoll: Eliminate redundant assignment\") removed\nthe initialization of the UDP checksum, which was wrong and broke\nnetpoll IPv6 transmission due to bad checksumming.\n\nudph-\u003echeck needs to be set before calling csum_ipv6_magic().",
  "id": "GHSA-wj97-6gr4-gfmq",
  "modified": "2025-11-19T18:31:16Z",
  "published": "2025-07-25T15:30:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38432"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/353016ec159f939a380ff6746476a779367ba9a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-38432 (GCVE-0-2025-38432)

Vulnerability from cvelistv5

Published

2025-07-25 14:24

Modified

2025-07-28 04:22

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: net: netpoll: Initialize UDP checksum field before checksumming commit f1fce08e63fe ("netpoll: Eliminate redundant assignment") removed the initialization of the UDP checksum, which was wrong and broke netpoll IPv6 transmission due to bad checksumming. udph->check needs to be set before calling csum_ipv6_magic().

References

URL

Tags

	https://git.kernel.org/stable/c/353016ec159f939a380ff6746476a779367ba9a3
	https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd

Impacted products

Vendor

Product

Version

Version: f1fce08e63fe1a2a8b8106b93b7244a39830edae
Version: f1fce08e63fe1a2a8b8106b93b7244a39830edae

Version: 6.15

Show details on NVD website

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/netpoll.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "status": "affected",
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              "versionType": "git"
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        {
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          "product": "Linux",
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              "version": "6.15.5",
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            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
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                  "versionEndExcluding": "6.15.5",
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                },
                {
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                  "versionEndExcluding": "6.16",
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                }
              ],
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: netpoll: Initialize UDP checksum field before checksumming\n\ncommit f1fce08e63fe (\"netpoll: Eliminate redundant assignment\") removed\nthe initialization of the UDP checksum, which was wrong and broke\nnetpoll IPv6 transmission due to bad checksumming.\n\nudph-\u003echeck needs to be set before calling csum_ipv6_magic()."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:22:04.875Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/353016ec159f939a380ff6746476a779367ba9a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd"
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      "title": "net: netpoll: Initialize UDP checksum field before checksumming",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38432",
    "datePublished": "2025-07-25T14:24:13.766Z",
    "dateReserved": "2025-04-16T04:51:24.015Z",
    "dateUpdated": "2025-07-28T04:22:04.875Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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