[FFmpeg-devel] [PATCH 2/4] avformat/jpegxl_anim_dec: initialize bit buffer

[Michael Niedermayer]

Fixes: use-of-uninitialized-value
Fixes: 70837/clusterfuzz-testcase-minimized-ffmpeg_dem_JPEGXL_ANIM_fuzzer-5089407768526848

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavformat/jpegxl_anim_dec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/jpegxl_anim_dec.c b/libavformat/jpegxl_anim_dec.c
index ac95d3b9617..3045167e1f9 100644
--- a/libavformat/jpegxl_anim_dec.c
+++ b/libavformat/jpegxl_anim_dec.c
@@ -77,7 +77,7 @@ static int jpegxl_anim_read_header(AVFormatContext *s)
     JXLAnimDemuxContext *ctx = s->priv_data;
     AVIOContext *pb = s->pb;
     AVStream *st;
-    uint8_t head[256 + AV_INPUT_BUFFER_PADDING_SIZE];
+    uint8_t head[256 + AV_INPUT_BUFFER_PADDING_SIZE] = {0};
     const int sizeofhead = sizeof(head) - AV_INPUT_BUFFER_PADDING_SIZE;
     int headsize = 0, ret;
     FFJXLMetadata meta = { 0 };
-- 
2.45.2