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| author | Vlad Yasevich <vladislav.yasevich@hp.com> | 2008-07-18 23:06:07 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-18 23:06:07 -0700 |
| commit | 23b29ed80bd7184398317a111dc488605cb66c7f (patch) | |
| tree | be2d87726f00ebb21d10fc62c2b4ba557a7392eb | |
| parent | 7dab83de50c7b2b7ceac695a0b56fa6c0f95b0bc (diff) | |
| download | linux-3.10-23b29ed80bd7184398317a111dc488605cb66c7f.tar.gz linux-3.10-23b29ed80bd7184398317a111dc488605cb66c7f.tar.bz2 linux-3.10-23b29ed80bd7184398317a111dc488605cb66c7f.zip | |
sctp: Do not leak memory on multiple listen() calls
SCTP permits multiple listen call and on subsequent calls
we leak he memory allocated for the crypto transforms.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/sctp/socket.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index a0e879bb202..fd7ed9d46a4 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -5773,7 +5773,7 @@ int sctp_inet_listen(struct socket *sock, int backlog) goto out; /* Allocate HMAC for generating cookie. */ - if (sctp_hmac_alg) { + if (!sctp_sk(sk)->hmac && sctp_hmac_alg) { tfm = crypto_alloc_hash(sctp_hmac_alg, 0, CRYPTO_ALG_ASYNC); if (IS_ERR(tfm)) { if (net_ratelimit()) { @@ -5801,7 +5801,8 @@ int sctp_inet_listen(struct socket *sock, int backlog) goto cleanup; /* Store away the transform reference. */ - sctp_sk(sk)->hmac = tfm; + if (!sctp_sk(sk)->hmac) + sctp_sk(sk)->hmac = tfm; out: sctp_release_sock(sk); return err; |