Fixes: out of array access on 32bit Fixes: 54850/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-5302669294305280
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/scpr.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/scpr.c b/libavcodec/scpr.c index 5abe157a7d..7630adb3e0 100644 --- a/libavcodec/scpr.c +++ b/libavcodec/scpr.c @@ -458,6 +458,9 @@ static int decompress_p(AVCodecContext *avctx, int run, bx = x * 16 + sx1, by = y * 16 + sy1; uint32_t r, g, b, clr, ptype = 0; + if (bx >= avctx->width) + return AVERROR_INVALIDDATA; + for (; by < y * 16 + sy2 && by < avctx->height;) { ret = decode_value(s, s->op_model[ptype], 6, 1000, &ptype); if (ret < 0) -- 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".
