From 3f0b95bb176445a509d99e7497e90f20355b8411 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Fri, 16 Aug 2024 16:33:43 +0200
Subject: [PATCH] avformat/jpegxl_anim_dec: clear buffer padding

Fixes: use of uninitialized value
Fixes: 70992/clusterfuzz-testcase-minimized-ffmpeg_dem_IMAGE2_fuzzer-5735819170611200

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@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 2338a2e8c0..7798f3dabc 100644
--- a/libavformat/jpegxl_anim_dec.c
+++ b/libavformat/jpegxl_anim_dec.c
@@ -43,7 +43,7 @@ typedef struct JXLAnimDemuxContext {
 
 static int jpegxl_anim_probe(const AVProbeData *p)
 {
-    uint8_t buffer[4096 + AV_INPUT_BUFFER_PADDING_SIZE];
+    uint8_t buffer[4096 + AV_INPUT_BUFFER_PADDING_SIZE] = {0};
     int copied = 0, ret;
     FFJXLMetadata meta = { 0 };