CVE-2026-49431
Full vulnerability record from the local CVENow database.
Description
The ZFS_IOC_SET_PROP ioctl, used by zfs-set(8), incorrectly validated the calling user such that an unprivileged user is able to set metadata on a dataset indicating that the dataset has received properties from a zfs-recv(8) stream. Any local user can set the internal ZFS metadata flag "$hasrecvd" on datasets via ZFS_IOC_SET_PROP.
Severity
LOW
CVSS score
3.3
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-08-19 06:17:43.027000
Last modified
2026-11-09 20:10:00.200000
View original CVE JSON
{
"id": "CVE-2026-49431",
"sourceIdentifier": "[email protected]",
"published": "2026-08-19T06:17:43.027",
"lastModified": "2026-11-09T20:10:00.200",
"vulnStatus": "Analyzed",
"cveTags": [],
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{
"lang": "en",
"value": "The ZFS_IOC_SET_PROP ioctl, used by zfs-set(8), incorrectly validated the calling user such that an unprivileged user is able to set metadata on a dataset indicating that the dataset has received properties from a zfs-recv(8) stream.\n\nAny local user can set the internal ZFS metadata flag \"$hasrecvd\" on datasets via ZFS_IOC_SET_PROP."
},
{
"lang": "es",
"value": "El ioctl ZFS_IOC_SET_PROP, utilizado por zfs-set(8), validó incorrectamente al usuario que realizaba la llamada, de tal manera que un usuario sin privilegios puede establecer metadatos en un conjunto de datos indicando que el conjunto de datos ha recibido propiedades de un flujo zfs-recv(8).\n\nCualquier usuario local puede establecer la bandera de metadatos interna de ZFS ’$hasrecvd’ en conjuntos de datos a través de ZFS_IOC_SET_PROP."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "FreeBSD",
"product": "FreeBSD",
"defaultStatus": "unknown",
"modules": [
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"baseScore": 3.3,
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"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
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"id": "CVE-2026-49431",
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"description": [
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"references": [
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"url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:40.zfs.asc",
"source": "[email protected]",
"tags": [
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]
}
]
}