CVE-2026-49413 Flaw in Linuxulator execution of setugid binaries

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 set-group-ID executables. A...