Detections
Analytics
CVE-2026-49431
low
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.
References
https://security.freebsd.org/advisories/FreeBSD-SA-26:40.zfs.asc