In FreeBSD 12.1-STABLE before r356089, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r356090, and 11.3-RELEASE before 11.3-RELEASE-p7, driver specific ioctl command handlers in the oce network driver failed to check whether the caller has sufficient privileges allowing unprivileged users to send passthrough commands to the device firmware.

References

• https://nvd.nist.gov/vuln/detail/CVE-2019-15876
• https://security.FreeBSD.org/advisories/FreeBSD-SA-20:05.if_oce_ioctl.asc