avformat/mxfdec: Check that key was read sucessfull

Fixes: use of uninitialized value Fixes: 70932/clusterfuzz-testcase-minimized-ffmpeg_dem_MXF_fuzzer-4870202133643264

Michael Niedermayer committed 2 years ago

Commit 4c62cbc1 parent d3aa99a1 file · +2 −1Browse files

Unified · Split

@@ -1556,7 +1556,8 @@ static int mxf_read_indirect_value(void arg, AVIOContext pb, int size) · 1555 unmodified lines
1556	if (size <= 17)	1556	if (size <= 17)
1557	return 0;	1557	return 0;
1558		1558
1559	avio_read(pb, key, 17);	1559	if (avio_read(pb, key, 17) != 17)
		1560	return AVERROR_INVALIDDATA;
1560	/* TODO: handle other types of of indirect values */	1561	/* TODO: handle other types of of indirect values */
1561	if (memcmp(key, mxf_indirect_value_utf16le, 17) == 0) {	1562	if (memcmp(key, mxf_indirect_value_utf16le, 17) == 0) {
1562	return mxf_read_utf16le_string(pb, size - 17, &tagged_value->value);	1563	return mxf_read_utf16le_string(pb, size - 17, &tagged_value->value);

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