The minimal size which unpack() will not fail on is 5 bytes Fixes: Timeout (14sec -> 77ms) (testcase 15508) Fixes: 15508/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EATGV_fuzzer-5700053513011200 Fixes: 15996/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EATGV_fuzzer-5751353223151616
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/eatgv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/eatgv.c b/libavcodec/eatgv.c index 93e291f053..77b5da1f14 100644 --- a/libavcodec/eatgv.c +++ b/libavcodec/eatgv.c @@ -300,6 +300,10 @@ static int tgv_decode_frame(AVCodecContext *avctx, s->palette[i] = 0xFFU << 24 | AV_RB24(buf); buf += 3; } + if (buf_end - buf < 5) { + av_log(avctx, AV_LOG_WARNING, "packed data truncated\n"); + return AVERROR_INVALIDDATA; + } } if ((ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF)) < 0) -- 2.22.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
