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| author | Ondrej Mosnacek <omosnace@redhat.com> | 2020-08-12 14:58:25 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-08-13 17:09:32 +1000 |
| commit | 39709b59769d024936bdb204d0b49a6ae9d83b3e (patch) | |
| tree | d2268cb31c89c485e51d6d81088558d7aa0e67d4 | |
| parent | 18614fdea411d506ee302d4f16adcc095f0246cd (diff) | |
| download | linux-crypto-39709b59769d024936bdb204d0b49a6ae9d83b3e.tar.gz linux-crypto-39709b59769d024936bdb204d0b49a6ae9d83b3e.zip | |
crypto: algif_aead - fix uninitialized ctx->init
In skcipher_accept_parent_nokey() the whole af_alg_ctx structure is
cleared by memset() after allocation, so add such memset() also to
aead_accept_parent_nokey() so that the new "init" field is also
initialized to zero. Without that the initial ctx->init checks might
randomly return true and cause errors.
While there, also remove the redundant zero assignments in both
functions.
Found via libkcapi testsuite.
Cc: Stephan Mueller <smueller@chronox.de>
Fixes: a52eb0489f96 ("crypto: algif_aead - Only wake up when ctx->more is zero")
Suggested-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/algif_aead.c | 6 | ||||
| -rw-r--r-- | crypto/algif_skcipher.c | 7 |
2 files changed, 1 insertions, 12 deletions
diff --git a/crypto/algif_aead.c b/crypto/algif_aead.c index d48d2156..43c6aa78 100644 --- a/crypto/algif_aead.c +++ b/crypto/algif_aead.c @@ -558,12 +558,6 @@ static int aead_accept_parent_nokey(void *private, struct sock *sk) INIT_LIST_HEAD(&ctx->tsgl_list); ctx->len = len; - ctx->used = 0; - atomic_set(&ctx->rcvused, 0); - ctx->more = 0; - ctx->merge = 0; - ctx->enc = 0; - ctx->aead_assoclen = 0; crypto_init_wait(&ctx->wait); ask->private = ctx; diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index a51ba22f..81c40222 100644 --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -333,6 +333,7 @@ static int skcipher_accept_parent_nokey(void *private, struct sock *sk) ctx = sock_kmalloc(sk, len, GFP_KERNEL); if (!ctx) return -ENOMEM; + memset(ctx, 0, len); ctx->iv = sock_kmalloc(sk, crypto_skcipher_ivsize(tfm), GFP_KERNEL); @@ -340,16 +341,10 @@ static int skcipher_accept_parent_nokey(void *private, struct sock *sk) sock_kfree_s(sk, ctx, len); return -ENOMEM; } - memset(ctx->iv, 0, crypto_skcipher_ivsize(tfm)); INIT_LIST_HEAD(&ctx->tsgl_list); ctx->len = len; - ctx->used = 0; - atomic_set(&ctx->rcvused, 0); - ctx->more = 0; - ctx->merge = 0; - ctx->enc = 0; crypto_init_wait(&ctx->wait); ask->private = ctx; |