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| author | Eric Biggers <ebiggers@google.com> | 2022-01-19 03:13:02 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-08 15:39:57 +0300 |
| commit | c1db3f44f252e1f2e9ecd0e7decf23d3f943cafe (patch) | |
| tree | 5d6d9f6c629c787c548836a18b9fe3e073c37416 /crypto | |
| parent | 27a6f495b63a1804cc71be45911065db7757a98c (diff) | |
| download | linux-c1db3f44f252e1f2e9ecd0e7decf23d3f943cafe.tar.xz | |
crypto: rsa-pkcs1pad - only allow with rsa
commit 9b30430ea356f237945e52f8a3a42158877bd5a9 upstream.
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: 3d5b1ecdea6f ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'crypto')
| -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 8ac3e73e8ea6..1b3545781425 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)) { |