CVE-2026-49431 (GCVE-0-2026-49431)

Vulnerability from cvelistv5 – Published: 2026-08-19 05:15 – Updated: 2026-08-19 05:15
VLAI
Title
Incorrect user validation in ZFS_IOC_SET_PROP ioctl
Summary
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
No CVSS data available.
CWE
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version CPE status
FreeBSD FreeBSD Affected: 15.1-RELEASE , < p1 (release)
Affected: 15.0-RELEASE , < p11 (release)
Affected: 14.4-RELEASE , < p7 (release)
Affected: 14.3-RELEASE , < p16 (release)
guessed Create a notification for this product.
Date Public
2026-06-30 20:00
Credits
Yuxiang Yang, Yizhou Zhao, Ao Wang, Xuewei Feng, Qi Li, and Ke Xu from Tsinghua University using GLM-5.1 from Z.ai Emmanuel Genier at Quarkslab
Show details on NVD website
To clipboard 

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          "type": "finder",
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        },
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      "datePublic": "2026-06-30T20:00:00.000Z",
      "descriptions": [
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        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
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              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-08-19T05:15:37.371Z",
        "orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
        "shortName": "freebsd"
      },
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          "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:40.zfs.asc"
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    "dateReserved": "2026-05-29T20:24:28.617Z",
    "dateUpdated": "2026-08-19T05:15:37.371Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
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  }
}



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