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authorRichard Mudgett <rmudgett@digium.com>2016-08-23 10:42:08 -0500
committerRichard Mudgett <rmudgett@digium.com>2016-08-25 17:13:52 -0500
commit038cbc02152d4688293cadeaa17d65746d59fa44 (patch)
treece871d5085ea71775ac1879367a1cc552069d38c /res
parent88e9d05ef7de24f0169032c1ae4cacbe54be0a55 (diff)
ast_framehook_detach() must be called with the channel locked.
The framehook container could become corrupted if the channel lock is not held before calling. Change-Id: If0a1c7ba0484ed3a191106a7516526b905952584
Diffstat (limited to 'res')
-rw-r--r--res/res_fax.c4
-rw-r--r--res/res_pjsip_refer.c2
2 files changed, 6 insertions, 0 deletions
diff --git a/res/res_fax.c b/res/res_fax.c
index 86260d10e..be88b585e 100644
--- a/res/res_fax.c
+++ b/res/res_fax.c
@@ -4509,7 +4509,9 @@ static int acf_faxopt_write(struct ast_channel *chan, const char *cmd, char *dat
ast_log(LOG_WARNING, "Attempt to attach a T.38 gateway on channel (%s) with gateway already running.\n", ast_channel_name(chan));
}
} else if (ast_false(val)) {
+ ast_channel_lock(chan);
ast_framehook_detach(chan, details->gateway_id);
+ ast_channel_unlock(chan);
details->gateway_id = -1;
} else {
ast_log(LOG_WARNING, "Unsupported value '%s' passed to FAXOPT(%s).\n", value, data);
@@ -4561,7 +4563,9 @@ static int acf_faxopt_write(struct ast_channel *chan, const char *cmd, char *dat
ast_log(LOG_WARNING, "Attempt to attach a FAX detect on channel (%s) with FAX detect already running.\n", ast_channel_name(chan));
}
} else if (ast_false(val)) {
+ ast_channel_lock(chan);
ast_framehook_detach(chan, details->faxdetect_id);
+ ast_channel_unlock(chan);
details->faxdetect_id = -1;
} else {
ast_log(LOG_WARNING, "Unsupported value '%s' passed to FAXOPT(%s).\n", value, data);
diff --git a/res/res_pjsip_refer.c b/res/res_pjsip_refer.c
index 23c377d62..8fe4e8477 100644
--- a/res/res_pjsip_refer.c
+++ b/res/res_pjsip_refer.c
@@ -641,7 +641,9 @@ static void refer_blind_callback(struct ast_channel *chan, struct transfer_chann
refer_progress_notify(notification);
}
+ ast_channel_lock(chan);
ast_framehook_detach(chan, refer->progress->framehook);
+ ast_channel_unlock(chan);
ao2_cleanup(refer->progress);
}