From bd2c09a5c52647ec61096f101f3d6df528e77fc6 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 30 Jun 2020 21:11:25 +0200 Subject: [PATCH] avcodec/loco: Fix integer overflow with large values from loco_get_rice() Fixes: signed integer overflow: 155 + 2147483647 cannot be represented in type 'int' Fixes: 23421/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LOCO_fuzzer-5652849097965568 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 3ddc5e1f3cebca25ade54ee68159d305f210bf5f) Signed-off-by: Michael Niedermayer --- libavcodec/loco.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/loco.c b/libavcodec/loco.c index e22d280b96..f9655c0bf5 100644 --- a/libavcodec/loco.c +++ b/libavcodec/loco.c @@ -129,7 +129,7 @@ static int loco_decode_plane(LOCOContext *l, uint8_t *data, int width, int heigh int stride, const uint8_t *buf, int buf_size, int step) { RICEContext rc; - int val; + unsigned val; int ret; int i, j;