From c065971bf8c2a0ad060296443d0f5be52131d44b Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 3 Jul 2022 02:31:47 +0200 Subject: avcodec/wnv1: Check for width =1 The decoder only outputs pixels for width >1 images, fail early Fixes: Timeout Fixes: 48298/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WNV1_fuzzer-6198626319204352 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit d98d5a436aa70d3cef8f914c0467ef2fb2dd1dfc) Signed-off-by: Michael Niedermayer --- libavcodec/wnv1.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/wnv1.c b/libavcodec/wnv1.c index 915e9c7dc9..291be78cc8 100644 --- a/libavcodec/wnv1.c +++ b/libavcodec/wnv1.c @@ -136,6 +136,9 @@ static av_cold int decode_init(AVCodecContext *avctx) { static VLC_TYPE code_table[1 << CODE_VLC_BITS][2]; + if (avctx->width <= 1) + return AVERROR_INVALIDDATA; + avctx->pix_fmt = AV_PIX_FMT_YUV422P; code_vlc.table = code_table; -- cgit v1.2.3