asterisk -- multiple vulnerabilities

The Asterisk project reports:

AST-2022-004 - The header length on incoming STUN
messages that contain an ERROR-CODE attribute is not
properly checked. This can result in an integer underflow.
Note, this requires ICE or WebRTC support to be in use
with a malicious remote party.
AST-2022-005 - When acting as a UAC, and when placing
an outgoing call to a target that then forks Asterisk may
experience undefined behavior (crashes, hangs, etc) after
a dialog set is prematurely freed.
AST-2022-006 - If an incoming SIP message contains a
malformed multi-part body an out of bounds read access
may occur, which can result in undefined behavior. Note,
its currently uncertain if there is any externally
exploitable vector within Asterisk for this issue, but
providing this as a security issue out of caution.