From 3c0bfa7d1a90a22d5fe8daa415cc689c111562f1 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 19 May 2019 17:42:04 +0200 Subject: [PATCH] avcodec/cpia: Check input size also against linesizes and EOL 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 Reviewed-by: Carl Eugen Hoyos Signed-off-by: Michael Niedermayer --- libavcodec/cpia.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/cpia.c b/libavcodec/cpia.c index 58833b2f26..f6d7332606 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, *y_end, *u_end, *v_end; // 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)