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00_MQTT2_CLIENT.pm: defend against deep recursion(?) (Froum #92946)

git-svn-id: https://svn.fhem.de/fhem/trunk@17707 2b470e98-0d58-463d-a4d8-8e2adae1ed80
This commit is contained in:
rudolfkoenig 2018-11-08 12:03:27 +00:00
parent 00592fe634
commit 706b47adf6

View File

@ -251,9 +251,10 @@ MQTT2_CLIENT_Read($@)
}
my ($tlen, $off) = MQTT2_CLIENT_getRemainingLength($hash);
if($tlen < 0) {
if($tlen < 0 || $tlen+$off<=0) {
Log3 $name, 1, "Bogus data from $name, closing connection";
MQTT2_CLIENT_Disco($hash);
return;
}
return if(length($hash->{BUF}) < $tlen+$off);