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| author | Eric Biggers <ebiggers@google.com> | 2022-01-18 16:13:02 -0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-01-31 11:21:44 +1100 |
| commit | b53371d1c319b979f66e493404fe810512f2915e (patch) | |
| tree | e6b81d3e3bd0682171915b5d5e200365e7988e1f | |
| parent | 1fa0a89f39aef866741191e06708db17f1366108 (diff) | |
| download | linux-crypto-b53371d1c319b979f66e493404fe810512f2915e.tar.gz linux-crypto-b53371d1c319b979f66e493404fe810512f2915e.zip | |
crypto: rsa-pkcs1pad - only allow with rsa
The pkcs1pad template can be instantiated with an arbitrary akcipher
algorithm, which doesn't make sense; it is specifically an RSA padding
scheme. Make it check that the underlying algorithm really is RSA.
Fixes: 7185f32fb45d ("crypto: rsa - RSA padding algorithm")
Cc: <stable@vger.kernel.org> # v4.5+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/rsa-pkcs1pad.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/crypto/rsa-pkcs1pad.c b/crypto/rsa-pkcs1pad.c index 8ac3e73e..1b354578 100644 --- a/crypto/rsa-pkcs1pad.c +++ b/crypto/rsa-pkcs1pad.c @@ -621,6 +621,11 @@ static int pkcs1pad_create(struct crypto_template *tmpl, struct rtattr **tb) rsa_alg = crypto_spawn_akcipher_alg(&ctx->spawn); + if (strcmp(rsa_alg->base.cra_name, "rsa") != 0) { + err = -EINVAL; + goto err_free_inst; + } + err = -ENAMETOOLONG; hash_name = crypto_attr_alg_name(tb[2]); if (IS_ERR(hash_name)) { |