CVE-2026-58092

In FreeBSD 15.0, the kernel structure used to represent user credentials changed: previously the primary group ID was stored in the first element of the array containing the list of supplementary group IDs, whereas now the primary group ID is stored in a dedicated field. This change was largely...

CVE-2026-58092

CVE-2026-58092 affects FreeBSD 15.0 and later , specifically the mac_do(4) MAC policy module. The root cause is that the group_is_primary() function was not updated after FreeBSD 15.0 moved the primary group ID into a dedicated kernel field. This causes credential switches via setcred(2) under ce...

PT-2026-81930

In FreeBSD 15.0, the kernel structure used to represent user credentials changed: previously the primary group ID was stored in the first element of the array containing the list of supplementary group IDs, whereas now the primary group ID is stored in a dedicated field. This change was largely...

FreeBSD -- Unauthorized credential switching

Problem Description: In FreeBSD 15.0, the kernel structure used to represent user credentials changed: previously the primary group ID was stored in the first element of the array containing the list of supplementary group IDs, whereas now the primary group ID is stored in a dedicated field. This...

FreeBSD-SA-26:59.mac_do

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:59.macdo Security Advisory The FreeBSD Project Topic: Unauthorized credential switching Category: core Module: macdo Announced: 2026-08-25 Credits: Hazley...