Security Advisory

CVE-2026-49431

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-19 05:15:37

Last updated 2026-08-19 05:15:37

Assigner freebsd

CVSS score not scored

State PUBLISHED

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.

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