From c900f2e42c6ef4b51b5b9237fa6829a4db544d29 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 23 Feb 2022 23:58:41 +0100 Subject: tools/target_dem_fuzzer: Check fmt before dereferencing Fixes: NULL pointer dereference Fixes: 44884/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4656748688965632 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- tools/target_dem_fuzzer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/target_dem_fuzzer.c b/tools/target_dem_fuzzer.c index 687989ccc8..32767a0182 100644 --- a/tools/target_dem_fuzzer.c +++ b/tools/target_dem_fuzzer.c @@ -173,7 +173,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { } // HLS uses a loop with sleep, we thus must breakout or we timeout - if (!strcmp(fmt->name, "hls")) + if (fmt && !strcmp(fmt->name, "hls")) interrupt_counter &= 31; if (!io_buffer_size || size / io_buffer_size > maxblocks) -- cgit v1.2.3