On 7/26/2024 7:11 PM, James Almer wrote:
On 7/26/2024 6:08 PM, Michael Niedermayer wrote:
Fixes: NULL pointer dereference
Fixes:
70569/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-5247918563459072
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavformat/mov.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavformat/mov.c b/libavformat/mov.c
index b74e43e2140..63db7d59a58 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -10060,6 +10060,10 @@ static int mov_read_header(AVFormatContext *s)
st = item->st;
sc = st->priv_data;
+
+ if (!sc->sample_sizes || !sc->sample_count)
+ return AVERROR_INVALIDDATA;
Deja vu. Didn't you send something like this before?
Also, can i get the sample? As with other issues, we shouldn't reach
No, it was me:
https://ffmpeg.org//pipermail/ffmpeg-devel/2024-June/330391.html
Still, i want to check the sample because i'm not sure how this code is
reached like this.
this point if these were not allocated.
+
st->codecpar->width = item->width;
st->codecpar->height = item->height;
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