CVE-2025-38460 (GCVE-0-2025-38460)
Vulnerability from cvelistv5
Published
2025-07-25 15:27
Modified
2025-07-28 04:23
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: atm: clip: Fix potential null-ptr-deref in to_atmarpd(). atmarpd is protected by RTNL since commit f3a0592b37b8 ("[ATM]: clip causes unregister hang"). However, it is not enough because to_atmarpd() is called without RTNL, especially clip_neigh_solicit() / neigh_ops->solicit() is unsleepable. Also, there is no RTNL dependency around atmarpd. Let's use a private mutex and RCU to protect access to atmarpd in to_atmarpd().
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/atm/clip.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "2.6.12"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.240",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.189",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.146",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.99",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.39",
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              "lessThanOrEqual": "6.15.*",
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              "version": "6.15.7",
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            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "versionEndExcluding": "5.4.296",
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                  "versionEndExcluding": "5.15.189",
                  "versionStartIncluding": "2.6.12",
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionEndExcluding": "6.12.39",
                  "versionStartIncluding": "2.6.12",
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.7",
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\natm: clip: Fix potential null-ptr-deref in to_atmarpd().\n\natmarpd is protected by RTNL since commit f3a0592b37b8 (\"[ATM]: clip\ncauses unregister hang\").\n\nHowever, it is not enough because to_atmarpd() is called without RTNL,\nespecially clip_neigh_solicit() / neigh_ops-\u003esolicit() is unsleepable.\n\nAlso, there is no RTNL dependency around atmarpd.\n\nLet\u0027s use a private mutex and RCU to protect access to atmarpd in\nto_atmarpd()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:23:06.309Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a4c5785feb979cd996a99cfaad8bf353b2e79301"
        },
        {
          "url": "https://git.kernel.org/stable/c/70eac9ba7ce25d99c1d99bbf4ddb058940f631f9"
        },
        {
          "url": "https://git.kernel.org/stable/c/3251ce3979f41bd228f77a7615f9dd616d06a110"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee4d9e4ddf3f9c4ee2ec0a3aad6196ee36d30e57"
        },
        {
          "url": "https://git.kernel.org/stable/c/06935c50cfa3ac57cce80bba67b6d38ec1406e92"
        },
        {
          "url": "https://git.kernel.org/stable/c/36caab990b69ef4eec1d81c52a19f080b7daa059"
        },
        {
          "url": "https://git.kernel.org/stable/c/f58e4270c73e7f086322978d585ea67c8076ce49"
        },
        {
          "url": "https://git.kernel.org/stable/c/706cc36477139c1616a9b2b96610a8bb520b7119"
        }
      ],
      "title": "atm: clip: Fix potential null-ptr-deref in to_atmarpd().",
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38460",
    "datePublished": "2025-07-25T15:27:38.608Z",
    "dateReserved": "2025-04-16T04:51:24.019Z",
    "dateUpdated": "2025-07-28T04:23:06.309Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38460\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-25T16:15:31.787\",\"lastModified\":\"2025-07-29T14:14:55.157\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\natm: clip: Fix potential null-ptr-deref in to_atmarpd().\\n\\natmarpd is protected by RTNL since commit f3a0592b37b8 (\\\"[ATM]: clip\\ncauses unregister hang\\\").\\n\\nHowever, it is not enough because to_atmarpd() is called without RTNL,\\nespecially clip_neigh_solicit() / neigh_ops-\u003esolicit() is unsleepable.\\n\\nAlso, there is no RTNL dependency around atmarpd.\\n\\nLet\u0027s use a private mutex and RCU to protect access to atmarpd in\\nto_atmarpd().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: atm: clip: Se corrige un posible error de referencia nulo en to_atmarpd(). atmarpd est\u00e1 protegido por RTNL desde el commit f3a0592b37b8 (\\\"[ATM]: clip provoca un bloqueo al cancelar el registro\\\"). Sin embargo, esto no es suficiente, ya que to_atmarpd() se llama sin RTNL, especialmente clip_neigh_solicit() / neigh_ops-\u0026gt;solicit() no se puede suspender. Adem\u00e1s, atmarpd no depende de RTNL. Usemos un mutex privado y una RCU para proteger el acceso a atmarpd en to_atmarpd().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/06935c50cfa3ac57cce80bba67b6d38ec1406e92\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3251ce3979f41bd228f77a7615f9dd616d06a110\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/36caab990b69ef4eec1d81c52a19f080b7daa059\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/706cc36477139c1616a9b2b96610a8bb520b7119\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/70eac9ba7ce25d99c1d99bbf4ddb058940f631f9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a4c5785feb979cd996a99cfaad8bf353b2e79301\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ee4d9e4ddf3f9c4ee2ec0a3aad6196ee36d30e57\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f58e4270c73e7f086322978d585ea67c8076ce49\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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