From: Joshua C. Colp <jcolp@sangoma.com>
Date: Wed, 3 Mar 2021 13:32:22 +0000 (-0400)
Subject: channel: Fix memory leak in suppress API.
X-Git-Tag: 16.17.0-rc1~20
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c81c4f3ae289a245389a79cbed6b935b63d8e2bd;p=thirdparty%2Fasterisk.git

channel: Fix memory leak in suppress API.

A frame suppression API exists as part of channels
which allows audio frames to or from a channel to
be dropped. The MuteAudio AMI action uses this
API to perform its job.

This API uses a framehook to intercept flowing
audio and drop it when appropriate. It is the
responsibility of the framehook to free the
frame it is given if it changes the frame. The
suppression API failed to do this resulting in
a leak of audio frames.

This change adds the freeing of these frames.

ASTERISK-29071

Change-Id: Ie50acd454d672d36af914050c327d2e120d8ba7b
---

diff --git a/main/channel.c b/main/channel.c
index 253b663504..64d93c4fe7 100644
--- a/main/channel.c
+++ b/main/channel.c
@@ -10845,6 +10845,7 @@ static struct ast_frame *suppress_framehook_event_cb(struct ast_channel *chan, s
 	if (suppress_frame) {
 		switch (frame->frametype) {
 		case AST_FRAME_VOICE:
+			ast_frfree(frame);
 			frame = &ast_null_frame;
 			break;
 		default: