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author | Herbert Xu <herbert@gondor.apana.org.au> | 2017-04-06 16:16:09 +0800 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-04-10 19:17:26 +0800 |
commit | 7175dac1d936b8952135c804b9db718821852877 (patch) | |
tree | 83e4c02138525dc0b2672b1168d18758098c2264 | |
parent | 813e2f3cf818bb3dfbc6f26b350909f171bf0914 (diff) | |
download | linux-crypto-7175dac1d936b8952135c804b9db718821852877.tar.gz linux-crypto-7175dac1d936b8952135c804b9db718821852877.zip |
crypto: af_alg - Allow arbitrarily long algorithm names
This patch removes the hard-coded 64-byte limit on the length
of the algorithm name through bind(2). The address length can
now exceed that. The user-space structure remains unchanged.
In order to use a longer name simply extend the salg_name array
beyond its defined 64 bytes length.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
-rw-r--r-- | crypto/af_alg.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c index 690deca1..3556d8eb 100644 --- a/crypto/af_alg.c +++ b/crypto/af_alg.c @@ -160,11 +160,11 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) if (sock->state == SS_CONNECTED) return -EINVAL; - if (addr_len != sizeof(*sa)) + if (addr_len < sizeof(*sa)) return -EINVAL; sa->salg_type[sizeof(sa->salg_type) - 1] = 0; - sa->salg_name[sizeof(sa->salg_name) - 1] = 0; + sa->salg_name[sizeof(sa->salg_name) + addr_len - sizeof(*sa) - 1] = 0; type = alg_get_type(sa->salg_type); if (IS_ERR(type) && PTR_ERR(type) == -ENOENT) { |