[FFmpeg-cvslog] avcodec/wmaprodec: Fix cleanup on error
Michael Niedermayer
git at videolan.org
Thu Oct 10 15:36:01 EEST 2019
ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Wed Oct 9 10:19:42 2019 +0200| [a5d29812ec364ad4b83b5c2dba281f1b559a518b] | committer: Michael Niedermayer
avcodec/wmaprodec: Fix cleanup on error
Fixes: memleaks
Fixes: 18023/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_XMA2_fuzzer-5642535011090432
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a5d29812ec364ad4b83b5c2dba281f1b559a518b
---
libavcodec/wmaprodec.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c
index 6ce2dd4adb..5c18479b3b 100644
--- a/libavcodec/wmaprodec.c
+++ b/libavcodec/wmaprodec.c
@@ -1888,12 +1888,14 @@ static av_cold int xma_decode_init(AVCodecContext *avctx)
s->num_streams = avctx->extradata[1];
if (avctx->extradata_size != (32 + ((avctx->extradata[0]==3)?0:8) + 4*s->num_streams)) {
av_log(avctx, AV_LOG_ERROR, "Incorrect XMA2 extradata size\n");
+ s->num_streams = 0;
return AVERROR(EINVAL);
}
} else if (avctx->codec_id == AV_CODEC_ID_XMA1 && avctx->extradata_size >= 4) { /* XMAWAVEFORMAT */
s->num_streams = avctx->extradata[4];
if (avctx->extradata_size != (8 + 20*s->num_streams)) {
av_log(avctx, AV_LOG_ERROR, "Incorrect XMA1 extradata size\n");
+ s->num_streams = 0;
return AVERROR(EINVAL);
}
} else {
@@ -1906,6 +1908,7 @@ static av_cold int xma_decode_init(AVCodecContext *avctx)
s->num_streams <= 0
) {
avpriv_request_sample(avctx, "More than %d channels in %d streams", XMA_MAX_CHANNELS, s->num_streams);
+ s->num_streams = 0;
return AVERROR_PATCHWELCOME;
}
@@ -1938,6 +1941,7 @@ static av_cold int xma_decode_end(AVCodecContext *avctx)
decode_end(&s->xma[i]);
av_frame_free(&s->frames[i]);
}
+ s->num_streams = 0;
return 0;
}
@@ -1993,6 +1997,7 @@ AVCodec ff_wmapro_decoder = {
.close = wmapro_decode_end,
.decode = wmapro_decode_packet,
.capabilities = AV_CODEC_CAP_SUBFRAMES | AV_CODEC_CAP_DR1,
+ .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
.flush = wmapro_flush,
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
AV_SAMPLE_FMT_NONE },
@@ -2008,6 +2013,7 @@ AVCodec ff_xma1_decoder = {
.close = xma_decode_end,
.decode = xma_decode_packet,
.capabilities = AV_CODEC_CAP_SUBFRAMES | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
+ .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
AV_SAMPLE_FMT_NONE },
};
@@ -2023,6 +2029,7 @@ AVCodec ff_xma2_decoder = {
.decode = xma_decode_packet,
.flush = xma_flush,
.capabilities = AV_CODEC_CAP_SUBFRAMES | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
+ .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
AV_SAMPLE_FMT_NONE },
};
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