diff options
| 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 | 21dfbcd1f5cbff9cf2f9e7e43475aed8d072b0dd (patch) | |
| tree | 64f287d2b506bc1f88147319dae4c32945b275f0 /crypto/algif_skcipher.c | |
| parent | 3cbfe80737c18ac6e635421ab676716a393d3074 (diff) | |
| download | linux-21dfbcd1f5cbff9cf2f9e7e43475aed8d072b0dd.tar.bz2 | |
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: f3c802a1f300 ("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>
Diffstat (limited to 'crypto/algif_skcipher.c')
| -rw-r--r-- | crypto/algif_skcipher.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index a51ba22fef58..81c4022285a7 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; |