From f608e7801634f0ac9b661a22033be06ab5f5180b Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 19 Oct 2020 10:53:31 +0200 Subject: [PATCH] avformat/nistspheredec: Check bps Fixes: left shift of 1111111190 by 3 places cannot be represented in type 'int' Fixes: 26437/clusterfuzz-testcase-minimized-ffmpeg_dem_NISTSPHERE_fuzzer-4886896091856896 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 7c144b363e67bef7651108c88687b38155172c1f) Signed-off-by: Michael Niedermayer --- libavformat/nistspheredec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/nistspheredec.c b/libavformat/nistspheredec.c index 55f22ebcf4..dbf031f3e3 100644 --- a/libavformat/nistspheredec.c +++ b/libavformat/nistspheredec.c @@ -109,6 +109,8 @@ static int nist_read_header(AVFormatContext *s) sscanf(buffer, "%*s %*s %"SCNd64, &st->duration); } else if (!memcmp(buffer, "sample_n_bytes", 14)) { sscanf(buffer, "%*s %*s %d", &bps); + if (bps > INT_MAX/8U) + return AVERROR_INVALIDDATA; } else if (!memcmp(buffer, "sample_rate", 11)) { sscanf(buffer, "%*s %*s %d", &st->codecpar->sample_rate); } else if (!memcmp(buffer, "sample_sig_bits", 15)) {