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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 26 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 19 Aug 2026 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Freebsd
Freebsd freebsd
Vendors & Products Freebsd
Freebsd freebsd

Wed, 19 Aug 2026 05:30:00 +0000

Type Values Removed Values Added
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.
Title Incorrect user validation in ZFS_IOC_SET_PROP ioctl
Weaknesses CWE-863
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: freebsd

Published:

Updated: 2026-08-26T17:42:19.637Z

Reserved: 2026-05-29T20:24:28.617Z

Link: CVE-2026-49431

cve-icon Vulnrichment

Updated: 2026-08-26T17:42:14.920Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-19T06:17:43.027

Modified: 2026-08-26T18:16:38.037

Link: CVE-2026-49431

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-19T12:30:04Z

Weaknesses