[FFmpeg-cvslog] avcodec/rv60dec: Initialize slice gb with actually allocated size

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sun Feb  9 02:08:20 2025 +0100| [01f74bfaa2e0eda42ae68c449ddae6d0a991700f] | committer: Michael Niedermayer

avcodec/rv60dec: Initialize slice gb with actually allocated size

Fixes: out of array access
Fixes: 385170375/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RV60_fuzzer-4710055187906560

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross at xvid.org>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=01f74bfaa2e0eda42ae68c449ddae6d0a991700f
---

 libavcodec/rv60dec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/rv60dec.c b/libavcodec/rv60dec.c
index 0c2e03d737..24981015a9 100644
--- a/libavcodec/rv60dec.c
+++ b/libavcodec/rv60dec.c
@@ -2257,7 +2257,7 @@ static int decode_slice(AVCodecContext *avctx, void *tdata, int cu_y, int thread
     thread.avg_linesize[1] = 32;
     thread.avg_linesize[2] = 32;
 
-    if ((ret = init_get_bits8(&gb, s->slice[cu_y].data, s->slice[cu_y].size)) < 0)
+    if ((ret = init_get_bits8(&gb, s->slice[cu_y].data, s->slice[cu_y].data_size)) < 0)
         return ret;
 
     for (int cu_x = 0; cu_x < s->cu_width; cu_x++) {