From 228b846407a8fd26044ec67fd0a88353303687cc Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 22 Feb 2026 01:20:29 +0100 Subject: [PATCH] avcodec/vp3: Sanity check cropping Fixes: Timeout Fixes: 476179563/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_THEORA_fuzzer-5231013478596608 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/vp3.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index 7ce54967e1..edb5594bde 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -2874,6 +2874,8 @@ static int theora_decode_header(AVCodecContext *avctx, GetBitContext *gb) if (av_image_check_size(visible_width, visible_height, 0, avctx) < 0 || visible_width + offset_x > s->width || visible_height + offset_y > s->height || + visible_width + 512 < s->width || + visible_height + 512 < s->height || visible_width < 18 ) { av_log(avctx, AV_LOG_ERROR,