CVE-2023-53000 (GCVE-0-2023-53000)
Vulnerability from cvelistv5
Published
2025-03-27 16:43
Modified
2025-05-04 07:47
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netlink: prevent potential spectre v1 gadgets Most netlink attributes are parsed and validated from __nla_validate_parse() or validate_nla() u16 type = nla_type(nla); if (type == 0 || type > maxtype) { /* error or continue */ } @type is then used as an array index and can be used as a Spectre v1 gadget. array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users. This should take care of vast majority of netlink uses, but an audit is needed to take care of others where validation is not yet centralized in core netlink functions.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3e5082b1c66c7783fbcd79b5b178573230e528ff
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/41b74e95f297ac360ca7ed6bf200100717cb6c45
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/539ca5dcbc91134bbe2c45677811c31d8b030d2d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/992e4ff7116a77968039277b5d6aaa535c2f2184
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f0950402e8c76e7dcb08563f1b4e8000fbc62455
Impacted products
Vendor Product Version
Linux Linux Version: bfa83a9e03cf8d501c6272999843470afecb32ed
Version: bfa83a9e03cf8d501c6272999843470afecb32ed
Version: bfa83a9e03cf8d501c6272999843470afecb32ed
Version: bfa83a9e03cf8d501c6272999843470afecb32ed
Version: bfa83a9e03cf8d501c6272999843470afecb32ed
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   Linux Linux Version: 2.6.15
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{
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          "defaultStatus": "unaffected",
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          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: prevent potential spectre v1 gadgets\n\nMost netlink attributes are parsed and validated from\n__nla_validate_parse() or validate_nla()\n\n    u16 type = nla_type(nla);\n\n    if (type == 0 || type \u003e maxtype) {\n        /* error or continue */\n    }\n\n@type is then used as an array index and can be used\nas a Spectre v1 gadget.\n\narray_index_nospec() can be used to prevent leaking\ncontent of kernel memory to malicious users.\n\nThis should take care of vast majority of netlink uses,\nbut an audit is needed to take care of others where\nvalidation is not yet centralized in core netlink functions."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:47:15.178Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/f0950402e8c76e7dcb08563f1b4e8000fbc62455"
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      ],
      "title": "netlink: prevent potential spectre v1 gadgets",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53000",
    "datePublished": "2025-03-27T16:43:33.208Z",
    "dateReserved": "2025-03-27T16:40:15.742Z",
    "dateUpdated": "2025-05-04T07:47:15.178Z",
    "state": "PUBLISHED"
  },
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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53000\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-03-27T17:15:48.810\",\"lastModified\":\"2025-03-28T18:11:40.180\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetlink: prevent potential spectre v1 gadgets\\n\\nMost netlink attributes are parsed and validated from\\n__nla_validate_parse() or validate_nla()\\n\\n    u16 type = nla_type(nla);\\n\\n    if (type == 0 || type \u003e maxtype) {\\n        /* error or continue */\\n    }\\n\\n@type is then used as an array index and can be used\\nas a Spectre v1 gadget.\\n\\narray_index_nospec() can be used to prevent leaking\\ncontent of kernel memory to malicious users.\\n\\nThis should take care of vast majority of netlink uses,\\nbut an audit is needed to take care of others where\\nvalidation is not yet centralized in core netlink functions.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3e5082b1c66c7783fbcd79b5b178573230e528ff\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/41b74e95f297ac360ca7ed6bf200100717cb6c45\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/539ca5dcbc91134bbe2c45677811c31d8b030d2d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/992e4ff7116a77968039277b5d6aaa535c2f2184\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f0950402e8c76e7dcb08563f1b4e8000fbc62455\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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