diff mbox series

[FFmpeg-devel,2/4] avcodec/mv30: Use unsigned in idct_1d()

Message ID 20201114222628.6486-2-michael@niedermayer.cc
State Accepted
Commit 2eb641741766e98401f2a9d9a91c7afbdcb67d4b
Headers show
Series [FFmpeg-devel,1/4] avformat/iff: Check size before skip
Related show

Checks

Context Check Description
andriy/x86_make success Make finished
andriy/x86_make_fate success Make fate finished

Commit Message

Michael Niedermayer Nov. 14, 2020, 10:26 p.m. UTC
Fixes: signed integer overflow: 2110302399 + 39074947 cannot be represented in type 'int'
Fixes: 27330/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MV30_fuzzer-5664923153334272

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/mv30.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/libavcodec/mv30.c b/libavcodec/mv30.c
index 9f28199478..59088d84f8 100644
--- a/libavcodec/mv30.c
+++ b/libavcodec/mv30.c
@@ -102,7 +102,7 @@  static void get_qtable(int16_t *table, int quant, const uint8_t *quant_tab)
     }
 }
 
-static inline void idct_1d(int *blk, int step)
+static inline void idct_1d(unsigned *blk, int step)
 {
     const unsigned t0 = blk[0 * step] + blk[4 * step];
     const unsigned t1 = blk[0 * step] - blk[4 * step];