diff options
| author | Tudor-Dan Ambarus <tudor.ambarus@microchip.com> | 2018-03-23 12:42:20 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-03-31 01:33:12 +0800 |
| commit | eb5265317585649f6ee292aafe52a88cbef04806 (patch) | |
| tree | 292a7a55bc97c977cbdcf04e122064431449fd1a /drivers/crypto | |
| parent | cc4ccaafcbddb88d661143c779af08d4ed8798ae (diff) | |
| download | linux-eb5265317585649f6ee292aafe52a88cbef04806.tar.gz | |
crypto: chelsio - don't leak pointers to authenc keys
In chcr_authenc_setkey and chcr_aead_digest_null_setkey we save pointers to the authenc keys in local variables of type struct crypto_authenc_keys and we don't zeroize them after use. Fix this and don't leak pointers to the authenc keys. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/chelsio/chcr_algo.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c index 752ed9b25284..59fe6631e73e 100644 --- a/drivers/crypto/chelsio/chcr_algo.c +++ b/drivers/crypto/chelsio/chcr_algo.c @@ -3456,6 +3456,7 @@ static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key, if (IS_ERR(base_hash)) { pr_err("chcr : Base driver cannot be loaded\n"); aeadctx->enckey_len = 0; + memzero_explicit(&keys, sizeof(keys)); return -EINVAL; } { @@ -3507,10 +3508,12 @@ static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key, actx->auth_mode = param.auth_mode; chcr_free_shash(base_hash); + memzero_explicit(&keys, sizeof(keys)); return 0; } out: aeadctx->enckey_len = 0; + memzero_explicit(&keys, sizeof(keys)); if (!IS_ERR(base_hash)) chcr_free_shash(base_hash); return -EINVAL; @@ -3573,9 +3576,11 @@ static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc, aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 0, 0, key_ctx_len >> 4); actx->auth_mode = CHCR_SCMD_AUTH_MODE_NOP; + memzero_explicit(&keys, sizeof(keys)); return 0; out: aeadctx->enckey_len = 0; + memzero_explicit(&keys, sizeof(keys)); return -EINVAL; } |