From 744ad45c44e69e354e924902c4daf0044dcd9955 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 20 Jul 2022 01:05:20 +0200 Subject: [PATCH] avformat/mov: Check for EOF in mov_read_iloc() Fixes: Timeout Fixes: 49216/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-6563000529584128 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/mov.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/mov.c b/libavformat/mov.c index 14550e6456..a09a762d91 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -7555,6 +7555,8 @@ static int mov_read_iloc(MOVContext *c, AVIOContext *pb, MOVAtom atom) for (int i = 0; i < item_count; i++) { int item_id = (version < 2) ? avio_rb16(pb) : avio_rb32(pb); + if (avio_feof(pb)) + return AVERROR_INVALIDDATA; if (version > 0) avio_rb16(pb); // construction_method. avio_rb16(pb); // data_reference_index.