Freebsd · Freebsd · CVE-2026-49413
**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 ordering, where `AT SECURE=0` is emitted in the auxiliary vector (auxv). This allows local users to use the `LD PRELOAD` environment variable to gain root privileges (euid=0).
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.