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ast_framehook_detach() must be called with the channel locked.

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The framehook container could become corrupted if the channel lock is not
held before calling.

Change-Id: If0a1c7ba0484ed3a191106a7516526b905952584
This commit is contained in:
Richard Mudgett
2016-08-23 10:42:08 -05:00
parent 5744f434f0
commit b86771d1bf
2 changed files with 6 additions and 0 deletions
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4
res/res_fax.c
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@@ -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);