diff options
Diffstat (limited to 'fs/smb/server/auth.c')
| -rw-r--r-- | fs/smb/server/auth.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/fs/smb/server/auth.c b/fs/smb/server/auth.c index 2a5b4a96bf99..b3d121052408 100644 --- a/fs/smb/server/auth.c +++ b/fs/smb/server/auth.c @@ -550,7 +550,19 @@ int ksmbd_krb5_authenticate(struct ksmbd_session *sess, char *in_blob, retval = -ENOMEM; goto out; } - sess->user = user; + + if (!sess->user) { + /* First successful authentication */ + sess->user = user; + } else { + if (!ksmbd_compare_user(sess->user, user)) { + ksmbd_debug(AUTH, "different user tried to reuse session\n"); + retval = -EPERM; + ksmbd_free_user(user); + goto out; + } + ksmbd_free_user(user); + } memcpy(sess->sess_key, resp->payload, resp->session_key_len); memcpy(out_blob, resp->payload + resp->session_key_len, @@ -1016,9 +1028,9 @@ static int ksmbd_get_encryption_key(struct ksmbd_work *work, __u64 ses_id, ses_enc_key = enc ? sess->smb3encryptionkey : sess->smb3decryptionkey; - if (enc) - ksmbd_user_session_get(sess); memcpy(key, ses_enc_key, SMB3_ENC_DEC_KEY_SIZE); + if (!enc) + ksmbd_user_session_put(sess); return 0; } @@ -1218,7 +1230,7 @@ free_iv: free_sg: kfree(sg); free_req: - kfree(req); + aead_request_free(req); free_ctx: ksmbd_release_crypto_ctx(ctx); return rc; |