avcodec/ra288: Check block_align for the assumed value
authorMichael Niedermayer <michael@niedermayer.cc>
Tue, 29 Oct 2019 17:46:34 +0000 (18:46 +0100)
committerMichael Niedermayer <michael@niedermayer.cc>
Wed, 20 Nov 2019 14:50:15 +0000 (15:50 +0100)
Fixes: Timeout (224sec -> 1ms)
Fixes: 18408/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RA_288_fuzzer-5740382570151936

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/ra288.c

index f1b3c8e..aa4bd5d 100644 (file)
@@ -77,7 +77,7 @@ static av_cold int ra288_decode_init(AVCodecContext *avctx)
     avctx->channel_layout = AV_CH_LAYOUT_MONO;
     avctx->sample_fmt     = AV_SAMPLE_FMT_FLT;
 
-    if (avctx->block_align <= 0) {
+    if (avctx->block_align != 38) {
         av_log(avctx, AV_LOG_ERROR, "unsupported block align\n");
         return AVERROR_PATCHWELCOME;
     }