PR #20247 opened by michaelni URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20247 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20247.patch
in pack mode the array is passed into decode_plane() without being initialized or used Fixes: use of uninitialized memory Fixes: 438780119/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_UTVIDEO_DEC_fuzzer-5464037027807232 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> >From 2a22972db3b390d82dedbdbb5f44cc09a43912b5 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer <mich...@niedermayer.cc> Date: Fri, 15 Aug 2025 17:55:05 +0200 Subject: [PATCH] avcodec/utvideodec: Clear plane_start array in pack mode the array is passed into decode_plane() without being initialized or used Fixes: use of uninitialized memory Fixes: 438780119/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_UTVIDEO_DEC_fuzzer-5464037027807232 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/utvideodec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/utvideodec.c b/libavcodec/utvideodec.c index 934945c1be..bc02ac44d5 100644 --- a/libavcodec/utvideodec.c +++ b/libavcodec/utvideodec.c @@ -585,7 +585,7 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame, int buf_size = avpkt->size; UtvideoContext *c = avctx->priv_data; int i, j; - const uint8_t *plane_start[5]; + const uint8_t *plane_start[5] = {NULL}; int plane_size, max_slice_size = 0, slice_start, slice_end, slice_size; int ret; GetByteContext gb; -- 2.49.1 _______________________________________________ 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".
