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| author | Mike Sassak <[email protected]> | 2013-09-13 16:37:50 -0700 |
|---|---|---|
| committer | Mike Sassak <[email protected]> | 2013-09-20 19:22:59 -0700 |
| commit | 17f6fd613e8b7039526fbb063c6751fc0c2008c3 (patch) | |
| tree | e942e9547298ff895b8b6d4aaf74bbe3dee1f4c9 /erts/emulator/beam/erl_bif_binary.c | |
| parent | 589a9ed126d205007e79c22053d1b156a383d99f (diff) | |
| download | otp-17f6fd613e8b7039526fbb063c6751fc0c2008c3.tar.gz otp-17f6fd613e8b7039526fbb063c6751fc0c2008c3.tar.bz2 otp-17f6fd613e8b7039526fbb063c6751fc0c2008c3.zip | |
Check all pattern arguments passed to binary:matches/2
Including an empty binary as one of multiple patterns passed to
binary:matches/2 would crash BEAM with: "Cannot reallocate
1342177280 bytes of memory (of type "tmp")". This ensures each pattern
is valid before trying to match.
Diffstat (limited to 'erts/emulator/beam/erl_bif_binary.c')
| -rw-r--r-- | erts/emulator/beam/erl_bif_binary.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_bif_binary.c b/erts/emulator/beam/erl_bif_binary.c index 0db19a1ee6..ff775691b3 100644 --- a/erts/emulator/beam/erl_bif_binary.c +++ b/erts/emulator/beam/erl_bif_binary.c @@ -927,6 +927,9 @@ static int do_binary_match_compile(Eterm argument, Eterm *tag, Binary **binp) if (binary_bitsize(b) != 0) { goto badarg; } + if (binary_size(b) == 0) { + goto badarg; + } ++words; characters += binary_size(b); } |