Fixes: signed integer overflow: -182838 * 32768 cannot be represented in type 'int' Fixes: 58179/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RKA_fuzzer-5333265899978752
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 3e86d83819..e4a70f5557 100644 --- a/libavcodec/rka.c +++ b/libavcodec/rka.c @@ -732,7 +732,7 @@ static int decode_filter(RKAContext *s, ChContext *ctx, ACoder *ac, int off, uns if (bits == 0) { ctx->buf1[off] = sum + val; } else { - ctx->buf1[off] = (val + (sum >> bits)) * (1 << bits) + + ctx->buf1[off] = (val + (sum >> bits)) * (1U << bits) + (((1U << bits) - 1U) & ctx->buf1[off + -1]); } ctx->buf0[off] = ctx->buf1[off] + ctx->buf0[off + -1]; -- 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".
