On 4/13/2021 12:45 PM, Michael Niedermayer wrote:
Fixes: Timeout
Fixes:
32450/clusterfuzz-testcase-minimized-ffmpeg_dem_AAX_fuzzer-4875522262827008
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavformat/aaxdec.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/libavformat/aaxdec.c b/libavformat/aaxdec.c
index c6d2d1c8d1..ff9768efac 100644
--- a/libavformat/aaxdec.c
+++ b/libavformat/aaxdec.c
@@ -249,7 +249,10 @@ static int aax_read_header(AVFormatContext *s)
goto fail;
}
- avio_seek(pb, data_offset, SEEK_SET);
+ ret = avio_seek(pb, data_offset, SEEK_SET);
There's another unchecked seek, and for both you should use an int64_t
variable to store the return value, otherwise values > INT_MAX could be
misinterpreted as errors.
+ if (ret < 0)
+ goto fail;
+
if (type == COLUMN_TYPE_VLDATA) {
int64_t start, size;
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