github - ghsa-4g43-pmw7-v27w

ghsa-4g43-pmw7-v27w

Vulnerability from github

Published

2025-11-12 12:30

Modified

2025-11-12 12:30

Details

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

ipv6: use RCU in ip6_output()

Use RCU in ip6_output() in order to use dst_dev_rcu() to prevent possible UAF.

We can remove rcu_read_lock()/rcu_read_unlock() pairs from ip6_finish_output2().

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40158"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-12T11:15:45Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: use RCU in ip6_output()\n\nUse RCU in ip6_output() in order to use dst_dev_rcu() to prevent\npossible UAF.\n\nWe can remove rcu_read_lock()/rcu_read_unlock() pairs\nfrom ip6_finish_output2().",
  "id": "GHSA-4g43-pmw7-v27w",
  "modified": "2025-11-12T12:30:28Z",
  "published": "2025-11-12T12:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40158"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0393f85c3241c19ba8550f04a812e7d19f6b3082"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/11709573cc4e48dc34c80fc7ab9ce5b159e29695"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-40158 (GCVE-0-2025-40158)

Vulnerability from cvelistv5

Published

2025-11-12 10:23

Modified

2025-11-12 10:23

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU in ip6_output() Use RCU in ip6_output() in order to use dst_dev_rcu() to prevent possible UAF. We can remove rcu_read_lock()/rcu_read_unlock() pairs from ip6_finish_output2().

References

URL

Tags

	https://git.kernel.org/stable/c/0393f85c3241c19ba8550f04a812e7d19f6b3082
	https://git.kernel.org/stable/c/11709573cc4e48dc34c80fc7ab9ce5b159e29695

Impacted products

Vendor

Product

Version

Version: 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36
Version: 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36

Version: 4.13

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv6/ip6_output.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0393f85c3241c19ba8550f04a812e7d19f6b3082",
              "status": "affected",
              "version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ipv6/ip6_output.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.13"
            },
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              "version": "0",
              "versionType": "semver"
            },
            {
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              "version": "6.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
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      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.3",
                  "versionStartIncluding": "4.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18-rc1",
                  "versionStartIncluding": "4.13",
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                }
              ],
              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: use RCU in ip6_output()\n\nUse RCU in ip6_output() in order to use dst_dev_rcu() to prevent\npossible UAF.\n\nWe can remove rcu_read_lock()/rcu_read_unlock() pairs\nfrom ip6_finish_output2()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-11-12T10:23:29.516Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0393f85c3241c19ba8550f04a812e7d19f6b3082"
        },
        {
          "url": "https://git.kernel.org/stable/c/11709573cc4e48dc34c80fc7ab9ce5b159e29695"
        }
      ],
      "title": "ipv6: use RCU in ip6_output()",
      "x_generator": {
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      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40158",
    "datePublished": "2025-11-12T10:23:29.516Z",
    "dateReserved": "2025-04-16T07:20:57.176Z",
    "dateUpdated": "2025-11-12T10:23:29.516Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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