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Git pushed a commit to branch release/5.1
in repository ffmpeg.

commit 059fe30d550996f6244fcd7e6016621854c357c9
Author:     Michael Niedermayer <[email protected]>
AuthorDate: Sun Feb 8 00:19:12 2026 +0100
Commit:     Michael Niedermayer <[email protected]>
CommitDate: Tue May 5 15:21:01 2026 +0200

    avformat/scd: Use ffio_read_size()
    
    Fixes: use of uninitialized memory
    Fixes: 
471771529/clusterfuzz-testcase-minimized-ffmpeg_dem_SCD_fuzzer-5328203515494400
    
    Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
    Signed-off-by: Michael Niedermayer <[email protected]>
    (cherry picked from commit a5007428e853c5a61e4ac3c6e24fa0304c3d0c1e)
    Signed-off-by: Michael Niedermayer <[email protected]>
---
 libavformat/scd.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/scd.c b/libavformat/scd.c
index 91b2262ff7..6dae2ad3f1 100644
--- a/libavformat/scd.c
+++ b/libavformat/scd.c
@@ -28,6 +28,7 @@
 #include "libavutil/avassert.h"
 #include "libavformat/internal.h"
 #include "avformat.h"
+#include "avio_internal.h"
 
 #define SCD_MAGIC              ((uint64_t)MKBETAG('S', 'E', 'D', 'B') << 32 | \
                                           MKBETAG('S', 'S', 'C', 'F'))
@@ -118,7 +119,7 @@ static int scd_read_offsets(AVFormatContext *s)
     SCDDemuxContext  *ctx = s->priv_data;
     uint8_t buf[SCD_OFFSET_HEADER_SIZE];
 
-    if ((ret = avio_read(s->pb, buf, SCD_OFFSET_HEADER_SIZE)) < 0)
+    if ((ret = ffio_read_size(s->pb, buf, SCD_OFFSET_HEADER_SIZE)) < 0)
         return ret;
 
     ctx->hdr.table0.count  = AV_RB16(buf +  0);

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