From 77d98898211eeb0241e8411428b0b364a6231744 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 27 May 2017 13:03:36 +0200 Subject: [PATCH] avcodec/pixlet: Fix runtime error: signed integer overflow: 2147483647 + 32 cannot be represented in type 'int' Fixes: 1829/clusterfuzz-testcase-minimized-5527165321871360 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/pixlet.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/pixlet.c b/libavcodec/pixlet.c index 0dfd5edbf7..0e541a9ccb 100644 --- a/libavcodec/pixlet.c +++ b/libavcodec/pixlet.c @@ -594,6 +594,10 @@ static int pixlet_decode_frame(AVCodecContext *avctx, void *data, width = bytestream2_get_be32(&ctx->gb); height = bytestream2_get_be32(&ctx->gb); + if ( width > INT_MAX - (1U << (NB_LEVELS + 1)) + || height > INT_MAX - (1U << (NB_LEVELS + 1))) + return AVERROR_INVALIDDATA; + w = FFALIGN(width, 1 << (NB_LEVELS + 1)); h = FFALIGN(height, 1 << (NB_LEVELS + 1));