Rapid7’s 2026 Global Cybersecurity Summit is now available on-demand.Watch sessions.
Rapid7

vulnerability

FreeBSD: (Multiple Advisories) (CVE-2019-5603)

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Oct 24, 2019
Added
Oct 24, 2019
Modified
Jun 15, 2026

Description

In FreeBSD 12.0-STABLE before r350261, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r350263, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, system calls operating on file descriptors as part of mqueuefs did not properly release the reference allowing a malicious user to overflow the counter allowing access to files, directories, and sockets opened by processes owned by other users.

Solutions

freebsd-upgrade-base-12_0-release-p10freebsd-upgrade-base-11_3-release-p3freebsd-upgrade-base-11_2-release-p14freebsd-upgrade-base-12_0-release-p8freebsd-upgrade-base-11_2-release-p12freebsd-upgrade-base-11_3-release-p1
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.