PT-2026-48523

Name of the Vulnerable Software and Affected Versions FreeBSD affected versions not specified Description A privilege escalation flaw exists in the Linuxulator, a compatibility layer that allows Linux binaries to run on FreeBSD. A logic bug related to AT SECURE occurs during setuid execution...

FreeBSD -- Flaw in Linuxulator execution of setugid binaries

Problem Description: The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the PSUGID process flag. During execve2, this flag is not yet set at the point where the auxiliary vector is constructed, so ATSECURE was incorrectly set to zero for set-user-ID and...

FreeBSD Security Advisory - FreeBSD-SA-26:30.linux

FreeBSD Security Advisory - The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the PSUGID process flag. During execve2, this flag is not yet set at the point where the auxiliary vector is constructed, so ATSECURE was incorrectly set to zero for set-user-ID and...