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| author | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2019-04-29 08:17:32 +0000 |
|---|---|---|
| committer | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2019-06-14 08:47:29 +0000 |
| commit | 0564da5fdc165948ba7c862fb81478f9287a072d (patch) | |
| tree | 3a30a0c1ec0c5a8d8fa73b950c7251aa219d1e09 /src/crypto/keccak.c | |
| parent | abstract_tcp_server2: improve DoS resistance (diff) | |
| download | monero-0564da5fdc165948ba7c862fb81478f9287a072d.tar.xz | |
ensure no NULL is passed to memcpy
NULL is valid when size is 0, but memcpy uses nonnull attributes,
so let's not poke the bear
Diffstat (limited to 'src/crypto/keccak.c')
| -rw-r--r-- | src/crypto/keccak.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/crypto/keccak.c b/src/crypto/keccak.c index 170911262..18ed3152f 100644 --- a/src/crypto/keccak.c +++ b/src/crypto/keccak.c @@ -116,7 +116,8 @@ void keccak(const uint8_t *in, size_t inlen, uint8_t *md, int mdlen) local_abort("Bad keccak use"); } - memcpy(temp, in, inlen); + if (inlen > 0) + memcpy(temp, in, inlen); temp[inlen++] = 1; memset(temp + inlen, 0, rsiz - inlen); temp[rsiz - 1] |= 0x80; |