From 8bce6ca5823a361c8e0ec2baab2997652255701f Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 30 Jun 2023 01:24:20 +0200 Subject: [PATCH] avcodec/rka: Fix integer overflow in decode_filter() Fixes: signed integer overflow: 2147443649 + 65535 cannot be represented in type 'int' Fixes: 60054/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RKA_fuzzer-5095674572832768 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit f9b29451e422e672595e95eefd03879a4398a1f6) Signed-off-by: Michael Niedermayer --- libavcodec/rka.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/rka.c b/libavcodec/rka.c index d56f4faee4..7646d776be 100644 --- a/libavcodec/rka.c +++ b/libavcodec/rka.c @@ -745,7 +745,7 @@ static int decode_filter(RKAContext *s, ChContext *ctx, ACoder *ac, int off, uns } ctx->buf1[off] = sum - ctx->buf0[off + -1]; ctx->buf0[off] = sum; - m += FFABS(ctx->buf1[off]); + m += (unsigned)FFABS(ctx->buf1[off]); } } if (ctx->cmode2 != 0) {