[FFmpeg-devel] [PATCH] avcodec/cpia: Check input size also against linesizes and EOL

[Michael Niedermayer]

Fixes: Timeout (14sec -> 29ms)
Fixes: 14733/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CPIA_fuzzer-5707022445576192

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

diff --git a/libavcodec/cpia.c b/libavcodec/cpia.c
index 119969389e..2e78fcff7a 100644
--- a/libavcodec/cpia.c
+++ b/libavcodec/cpia.c
@@ -63,7 +63,7 @@ static int cpia_decode_frame(AVCodecContext *avctx,
     uint8_t *y, *u, *v;
 
     // Check header
-    if ( avpkt->size < FRAME_HEADER_SIZE
+    if ( avpkt->size < FRAME_HEADER_SIZE + avctx->height*3
       || header[0] != MAGIC_0 || header[1] != MAGIC_1
       || (header[17] != SUBSAMPLE_420 && header[17] != SUBSAMPLE_422)
       || (header[18] != YUVORDER_YUYV && header[18] != YUVORDER_UYVY)
-- 
2.21.0