diff options
| author | Luca Deri <deri@ntop.org> | 2019-11-26 17:58:49 +0100 |
|---|---|---|
| committer | Luca Deri <deri@ntop.org> | 2019-11-26 17:58:49 +0100 |
| commit | d328c3bccc55d0c0171a3c227a23b8e4e663819d (patch) | |
| tree | 1812dc8ea5ec70526414f6cc9742551d340734be | |
| parent | 83685684434f5f1b6519c74f0a0e3965e36e6126 (diff) | |
Overflow fix
| -rw-r--r-- | src/lib/ndpi_utils.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/lib/ndpi_utils.c b/src/lib/ndpi_utils.c index 035a51e96..a988858a2 100644 --- a/src/lib/ndpi_utils.c +++ b/src/lib/ndpi_utils.c @@ -211,10 +211,11 @@ void ndpi_tdestroy(void *vrootp, void (*freefct)(void *)) u_int8_t ndpi_net_match(u_int32_t ip_to_check, u_int32_t net, - u_int32_t num_bits) -{ + u_int32_t num_bits) { u_int32_t mask = 0; + num_bits &= 0x1F; /* Avoid overflows */ + mask = ~(~mask >> num_bits); return(((ip_to_check & mask) == (net & mask)) ? 1 : 0); |