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GHSA-JW5W-H5C8-X699

Vulnerability from github – Published: 2025-03-27 18:31 – Updated: 2025-10-30 18:31

Details

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.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53000"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-129"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-27T17:15:48Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-jw5w-h5c8-x699",
  "modified": "2025-10-30T18:31:04Z",
  "published": "2025-03-27T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53000"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e5082b1c66c7783fbcd79b5b178573230e528ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/41b74e95f297ac360ca7ed6bf200100717cb6c45"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/539ca5dcbc91134bbe2c45677811c31d8b030d2d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/992e4ff7116a77968039277b5d6aaa535c2f2184"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f0950402e8c76e7dcb08563f1b4e8000fbc62455"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-53000 (GCVE-0-2023-53000)

Vulnerability from cvelistv5 – Published: 2025-03-27 16:43 – Updated: 2026-05-11 19:36

Title

netlink: prevent potential spectre v1 gadgets

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.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6992 records in the last 180 days details

References

5 references

URL	Tags
https://git.kernel.org/stable/c/3e5082b1c66c7783f…
https://git.kernel.org/stable/c/539ca5dcbc91134bb…
https://git.kernel.org/stable/c/41b74e95f297ac360…
https://git.kernel.org/stable/c/992e4ff7116a77968…
https://git.kernel.org/stable/c/f0950402e8c76e7dc…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: bfa83a9e03cf8d501c6272999843470afecb32ed , < 3e5082b1c66c7783fbcd79b5b178573230e528ff (git) Affected: bfa83a9e03cf8d501c6272999843470afecb32ed , < 539ca5dcbc91134bbe2c45677811c31d8b030d2d (git) Affected: bfa83a9e03cf8d501c6272999843470afecb32ed , < 41b74e95f297ac360ca7ed6bf200100717cb6c45 (git) Affected: bfa83a9e03cf8d501c6272999843470afecb32ed , < 992e4ff7116a77968039277b5d6aaa535c2f2184 (git) Affected: bfa83a9e03cf8d501c6272999843470afecb32ed , < f0950402e8c76e7dcb08563f1b4e8000fbc62455 (git)
Linux	Linux	Affected: 2.6.15 Unaffected: 0 , < 2.6.15 (semver) Unaffected: 5.4.231 , ≤ 5.4.* (semver) Unaffected: 5.10.166 , ≤ 5.10.* (semver) Unaffected: 5.15.91 , ≤ 5.15.* (semver) Unaffected: 6.1.9 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "lib/nlattr.c"
          ],
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              "versionType": "git"
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              "versionType": "git"
            }
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          "programFiles": [
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              "status": "affected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
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              "version": "6.2",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
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        }
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    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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