fkie_cve-2023-53000
Vulnerability from fkie_nvd
Published
2025-03-27 17:15
Modified
2025-03-28 18:11
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
Impacted products
| Vendor | Product | Version |
|---|
{
"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."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netlink: evitar posibles gadgets de Spectre v1 La mayor\u00eda de los atributos de netlink se analizan y validan desde __nla_validate_parse() o validate_nla() u16 type = nla_type(nla); if (type == 0 || type \u0026gt; maxtype) { /* error or continue */ } @type se usa entonces como un \u00edndice de matriz y puede usarse como un gadget de Spectre v1. array_index_nospec() puede usarse para evitar la filtraci\u00f3n de contenido de la memoria del kernel a usuarios maliciosos. Esto deber\u00eda solucionar la gran mayor\u00eda de los usos de netlink, pero se necesita una auditor\u00eda para encargarse de otros donde la validaci\u00f3n a\u00fan no est\u00e1 centralizada en las funciones principales de netlink."
}
],
"id": "CVE-2023-53000",
"lastModified": "2025-03-28T18:11:40.180",
"metrics": {},
"published": "2025-03-27T17:15:48.810",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"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"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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