From eebdb93d94fb79fb4a17104ee45c6c27e768505f Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 18 Jun 2024 15:48:26 +0200 Subject: [PATCH] avcodec/proresenc_kostya: use unsigned alpha for rotation Fixes: left shift of negative value -208 Fixes: 69073/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PRORES_KS_fuzzer-4745020002336768 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 93e0265e27e6dd567812a8661988109421c5447a) Signed-off-by: Michael Niedermayer --- libavcodec/proresenc_kostya.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/proresenc_kostya.c b/libavcodec/proresenc_kostya.c index 90cc87e388..9d9f705ce4 100644 --- a/libavcodec/proresenc_kostya.c +++ b/libavcodec/proresenc_kostya.c @@ -342,7 +342,7 @@ static void get_slice_data(ProresContext *ctx, const uint16_t *src, static void get_alpha_data(ProresContext *ctx, const uint16_t *src, ptrdiff_t linesize, int x, int y, int w, int h, - int16_t *blocks, int mbs_per_slice, int abits) + uint16_t *blocks, int mbs_per_slice, int abits) { const int slice_width = 16 * mbs_per_slice; int i, j, copy_w, copy_h;