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| author | Eric Biggers <ebiggers@google.com> | 2018-12-10 20:45:58 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-12-13 11:24:59 +0100 |
| commit | 00c9fe37a7f27a306bcaa5737f0787fe139f8aba (patch) | |
| tree | 879de5aacf4fef53cf165e1ad1769eff3ced4b79 | |
| parent | crypto: user - support incremental algorithm dumps (diff) | |
| download | linux-00c9fe37a7f27a306bcaa5737f0787fe139f8aba.tar.xz linux-00c9fe37a7f27a306bcaa5737f0787fe139f8aba.zip | |
crypto: adiantum - fix leaking reference to hash algorithm
crypto_alg_mod_lookup() takes a reference to the hash algorithm but
crypto_init_shash_spawn() doesn't take ownership of it, hence the
reference needs to be dropped in adiantum_create().
Fixes: 059c2a4d8e16 ("crypto: adiantum - add Adiantum support")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/adiantum.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/crypto/adiantum.c b/crypto/adiantum.c index e62e34f5e389..6651e713c45d 100644 --- a/crypto/adiantum.c +++ b/crypto/adiantum.c @@ -564,10 +564,8 @@ static int adiantum_create(struct crypto_template *tmpl, struct rtattr **tb) hash_alg = __crypto_shash_alg(_hash_alg); err = crypto_init_shash_spawn(&ictx->hash_spawn, hash_alg, skcipher_crypto_instance(inst)); - if (err) { - crypto_mod_put(_hash_alg); - goto out_drop_blockcipher; - } + if (err) + goto out_put_hash; /* Check the set of algorithms */ if (!adiantum_supported_algorithms(streamcipher_alg, blockcipher_alg, @@ -624,10 +622,13 @@ static int adiantum_create(struct crypto_template *tmpl, struct rtattr **tb) if (err) goto out_drop_hash; + crypto_mod_put(_hash_alg); return 0; out_drop_hash: crypto_drop_shash(&ictx->hash_spawn); +out_put_hash: + crypto_mod_put(_hash_alg); out_drop_blockcipher: crypto_drop_spawn(&ictx->blockcipher_spawn); out_drop_streamcipher: |