From a0f22218f74e3af73492e05e6696546b0da8d40e Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 3 Aug 2024 13:30:28 +0200 Subject: [PATCH] bsf/media100_to_mjpegb: Clear output buffer padding Fixes: use-of-uninitialized-value Fixes: 70855/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MEDIA100_fuzzer-5537446610141184 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/bsf/media100_to_mjpegb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libavcodec/bsf/media100_to_mjpegb.c b/libavcodec/bsf/media100_to_mjpegb.c index 6e117ae20f..4b2dc1a35a 100644 --- a/libavcodec/bsf/media100_to_mjpegb.c +++ b/libavcodec/bsf/media100_to_mjpegb.c @@ -148,6 +148,7 @@ second_field: AV_WB32(out->data + second_field_offset + 36, sod_offset[1] - second_field_offset); out->size = bytestream2_tell_p(&pb); + memset(out->data + out->size, 0, AV_INPUT_BUFFER_PADDING_SIZE); ret = av_packet_copy_props(out, in); if (ret < 0)