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| author | Erik de Castro Lopo <erikd@mega-nerd.com> | 2016-05-01 20:34:26 +1000 |
|---|---|---|
| committer | Erik de Castro Lopo <erikd@mega-nerd.com> | 2016-05-01 20:36:43 +1000 |
| commit | 94386fdea50da72f167c32ecf375e45fab79cdec (patch) | |
| tree | f081874bb1f73f0b46ea2c54a1b801544c2fbf31 /src/libFLAC/metadata_iterators.c | |
| parent | 516a7ad4d9c8f5cdf7039d2a4c9019404daf8a73 (diff) | |
| download | flac-94386fdea50da72f167c32ecf375e45fab79cdec.tar.gz | |
libFLAC: Add metadata size checks to FLAC library
This follows on from the previous patch.
Patch-from: lvqcl <lvqcl.mail@gmail.com>
Diffstat (limited to 'src/libFLAC/metadata_iterators.c')
| -rw-r--r-- | src/libFLAC/metadata_iterators.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/libFLAC/metadata_iterators.c b/src/libFLAC/metadata_iterators.c index 9356416e..1acb19c6 100644 --- a/src/libFLAC/metadata_iterators.c +++ b/src/libFLAC/metadata_iterators.c @@ -2536,6 +2536,9 @@ FLAC__bool write_metadata_block_header_cb_(FLAC__IOHandle handle, FLAC__IOCallba FLAC__byte buffer[FLAC__STREAM_METADATA_HEADER_LENGTH]; FLAC__ASSERT(block->length < (1u << FLAC__STREAM_METADATA_LENGTH_LEN)); + /* double protection */ + if(block->length >= (1u << FLAC__STREAM_METADATA_LENGTH_LEN)) + return false; buffer[0] = (block->is_last? 0x80 : 0) | (FLAC__byte)block->type; pack_uint32_(block->length, buffer + 1, 3); |