Fixes: left shift of negative value -81 Fixes: 56061/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RKA_fuzzer-4649758062149632
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/rka.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/rka.c b/libavcodec/rka.c index 7452acf27f..1eb2289e58 100644 --- a/libavcodec/rka.c +++ b/libavcodec/rka.c @@ -737,7 +737,7 @@ static int decode_filter(RKAContext *s, ChContext *ctx, ACoder *ac, int off, uns } ctx->buf0[off] = ctx->buf1[off] + ctx->buf0[off + -1]; } else { - val <<= ctx->cmode; + val *= 1 << ctx->cmode; sum += ctx->buf0[off + -1] + val; switch (s->bps) { case 16: sum = av_clip_int16(sum); break; -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
