[FFmpeg-devel] [PATCH 6/8] avformat/aaxdec: Check string before strcmp()
Michael Niedermayer
michael at niedermayer.cc
Fri Oct 23 21:39:38 EEST 2020
Fixes: NULL ptr dereference
Fixes: 26508/clusterfuzz-testcase-minimized-ffmpeg_dem_AAX_fuzzer-5694725249826816
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
libavformat/aaxdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/aaxdec.c b/libavformat/aaxdec.c
index 3db6e9bc6d..7d10e805ca 100644
--- a/libavformat/aaxdec.c
+++ b/libavformat/aaxdec.c
@@ -232,7 +232,7 @@ static int aax_read_header(AVFormatContext *s)
int64_t col_offset;
int flag, type;
- if (strcmp(a->xcolumns[c].name, "data"))
+ if (!a->xcolumns[c].name || strcmp(a->xcolumns[c].name, "data"))
continue;
type = a->xcolumns[c].type;
--
2.17.1
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