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Code Issues Releases Activity

avcodec/pixlet: consider minimum plane header in the minimal packet size

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Fixes: Timeout
Fixes: 46956/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PIXLET_fuzzer-5698161106092032

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2022-05-01 00:20:40 +02:00
parent dd6040675e
commit 4f9ee4bf43
1 changed files with 1 additions and 1 deletions
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2
libavcodec/pixlet.c
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@ -611,7 +611,7 @@ static int pixlet_decode_frame(AVCodecContext *avctx, AVFrame *p,
bytestream2_init(&ctx->gb, avpkt->data, avpkt->size);
pktsize = bytestream2_get_be32(&ctx->gb);
if (pktsize <= 44 || pktsize - 4 > bytestream2_get_bytes_left(&ctx->gb)) {
if (pktsize <= 44 + (NB_LEVELS * 8 + 6) * 3 || pktsize - 4 > bytestream2_get_bytes_left(&ctx->gb)) {
av_log(avctx, AV_LOG_ERROR, "Invalid packet size %"PRIu32"\n", pktsize);
return AVERROR_INVALIDDATA;
}