From f433faed1e31cdc62d379fc5c18985703625f823 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 5 Dec 2021 22:19:05 +0100 Subject: [PATCH] avformat/mxfdec: Check for duplicate mxf_read_index_entry_array() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes: memleak Fixes: 41596/clusterfuzz-testcase-minimized-ffmpeg_dem_MXF_fuzzer-6439060204290048 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Tomas Härdin Signed-off-by: Michael Niedermayer (cherry picked from commit 4f44a218e53cd92e64ba10a935bc1e7583c3e218) Signed-off-by: Michael Niedermayer --- libavformat/mxfdec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c index 2b0b4e89f8..b54fc4be2c 100644 --- a/libavformat/mxfdec.c +++ b/libavformat/mxfdec.c @@ -1060,6 +1060,9 @@ static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *seg { int i, length; + if (segment->temporal_offset_entries) + return AVERROR_INVALIDDATA; + segment->nb_index_entries = avio_rb32(pb); length = avio_rb32(pb);