[FFmpeg-devel] [PATCH] tools/target_dec_fuzzer: Check that FFv1 doesnt leave uninitialized memory in its buffers

[FFmpeg-devel] [PATCH] tools/target_dec_fuzzer: Check that FFv1 doesnt leave uninitialized memory in its buffers

[Michael Niedermayer]

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 tools/target_dec_fuzzer.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index 794b5b92cc7..5fccf2ab8fc 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -129,7 +129,14 @@ static int fuzz_video_get_buffer(AVCodecContext *ctx, AVFrame *frame)
 
     frame->extended_data = frame->data;
     for (i = 0; i < 4 && size[i]; i++) {
-        frame->buf[i] = av_buffer_allocz(size[i]);
+        switch(ctx->codec_id) {
+        case AV_CODEC_ID_FFV1:
+            frame->buf[i] = av_buffer_alloc(size[i]);
+        break;
+        default:
+            frame->buf[i] = av_buffer_allocz(size[i]);
+        }
+
         if (!frame->buf[i])
             goto fail;
         frame->data[i] = frame->buf[i]->data;
-- 
2.45.2

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Re: [FFmpeg-devel] [PATCH] tools/target_dec_fuzzer: Check that FFv1 doesnt leave uninitialized memory in its buffers

[Michael Niedermayer]

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On Mon, Aug 12, 2024 at 03:29:51PM +0200, Michael Niedermayer wrote:
> Sponsored-by: Sovereign Tech Fund
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
>  tools/target_dec_fuzzer.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)

will apply

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

When you are offended at any man's fault, turn to yourself and study your
own failings. Then you will forget your anger. -- Epictetus

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