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A patch to zero out sensitive cryptographic data and two minor cleanups
prompted by the fact that a bunch of code was moved in this cycle. -----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAmAK9skTHGlkcnlvbW92 QGdtYWlsLmNvbQAKCRBKf944AhHziyGwB/9rZnaaYR6Frqc2tzE5vbVtjAxvhftn pGDr8laOHiK5jnKR+ljNlPAe07TSEK+qVidulX05moujKrZeIrDUJZnEpScrssZO o7Tm99dHziqJc10liembtSZzB3LzGJyW1hgavC5Vjo7JW+EZ+YR9x2pFKCO7Hz/M QlT6kQmXZLnsLB2OieAyC9Yb7IMD1wfiOHHvOZDeFpIn49Z8reFahI+dSwwK/uOv UouxZKKuaikSTvzp8WmTiuCpsUfBMOaDy5/pWLfBS+/116K2aieJmzSjUb2MZwDT cLGhzrkyeCkBeFO5vhnob3n9KqWXN03I9rPB25StcrHCRYcHa3z/D/4k =9COg -----END PGP SIGNATURE----- Merge tag 'ceph-for-5.11-rc5' of git://github.com/ceph/ceph-client Pull ceph fixes from Ilya Dryomov: "A patch to zero out sensitive cryptographic data and two minor cleanups prompted by the fact that a bunch of code was moved in this cycle" * tag 'ceph-for-5.11-rc5' of git://github.com/ceph/ceph-client: libceph: fix "Boolean result is used in bitwise operation" warning libceph, ceph: disambiguate ceph_connection_operations handlers libceph: zero out session key and connection secret
This commit is contained in:
Linus Torvalds
commit
a9034304ff
@ -5038,7 +5038,7 @@ bad:
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return;
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}
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static struct ceph_connection *con_get(struct ceph_connection *con)
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static struct ceph_connection *mds_get_con(struct ceph_connection *con)
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{
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struct ceph_mds_session *s = con->private;
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@ -5047,7 +5047,7 @@ static struct ceph_connection *con_get(struct ceph_connection *con)
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return NULL;
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}
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static void con_put(struct ceph_connection *con)
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static void mds_put_con(struct ceph_connection *con)
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{
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struct ceph_mds_session *s = con->private;
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@ -5058,7 +5058,7 @@ static void con_put(struct ceph_connection *con)
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* if the client is unresponsive for long enough, the mds will kill
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* the session entirely.
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*/
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static void peer_reset(struct ceph_connection *con)
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static void mds_peer_reset(struct ceph_connection *con)
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{
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struct ceph_mds_session *s = con->private;
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struct ceph_mds_client *mdsc = s->s_mdsc;
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@ -5067,7 +5067,7 @@ static void peer_reset(struct ceph_connection *con)
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send_mds_reconnect(mdsc, s);
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}
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static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
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static void mds_dispatch(struct ceph_connection *con, struct ceph_msg *msg)
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{
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struct ceph_mds_session *s = con->private;
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struct ceph_mds_client *mdsc = s->s_mdsc;
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@ -5125,8 +5125,8 @@ out:
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* Note: returned pointer is the address of a structure that's
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* managed separately. Caller must *not* attempt to free it.
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*/
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static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
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int *proto, int force_new)
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static struct ceph_auth_handshake *
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mds_get_authorizer(struct ceph_connection *con, int *proto, int force_new)
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{
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struct ceph_mds_session *s = con->private;
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struct ceph_mds_client *mdsc = s->s_mdsc;
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@ -5142,7 +5142,7 @@ static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
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return auth;
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}
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static int add_authorizer_challenge(struct ceph_connection *con,
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static int mds_add_authorizer_challenge(struct ceph_connection *con,
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void *challenge_buf, int challenge_buf_len)
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{
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struct ceph_mds_session *s = con->private;
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@ -5153,7 +5153,7 @@ static int add_authorizer_challenge(struct ceph_connection *con,
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challenge_buf, challenge_buf_len);
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}
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static int verify_authorizer_reply(struct ceph_connection *con)
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static int mds_verify_authorizer_reply(struct ceph_connection *con)
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{
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struct ceph_mds_session *s = con->private;
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struct ceph_mds_client *mdsc = s->s_mdsc;
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@ -5165,7 +5165,7 @@ static int verify_authorizer_reply(struct ceph_connection *con)
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NULL, NULL, NULL, NULL);
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}
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static int invalidate_authorizer(struct ceph_connection *con)
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static int mds_invalidate_authorizer(struct ceph_connection *con)
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{
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struct ceph_mds_session *s = con->private;
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struct ceph_mds_client *mdsc = s->s_mdsc;
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@ -5288,15 +5288,15 @@ static int mds_check_message_signature(struct ceph_msg *msg)
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}
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static const struct ceph_connection_operations mds_con_ops = {
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.get = con_get,
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.put = con_put,
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.dispatch = dispatch,
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.get_authorizer = get_authorizer,
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.add_authorizer_challenge = add_authorizer_challenge,
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.verify_authorizer_reply = verify_authorizer_reply,
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.invalidate_authorizer = invalidate_authorizer,
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.peer_reset = peer_reset,
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.get = mds_get_con,
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.put = mds_put_con,
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.alloc_msg = mds_alloc_msg,
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.dispatch = mds_dispatch,
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.peer_reset = mds_peer_reset,
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.get_authorizer = mds_get_authorizer,
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.add_authorizer_challenge = mds_add_authorizer_challenge,
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.verify_authorizer_reply = mds_verify_authorizer_reply,
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.invalidate_authorizer = mds_invalidate_authorizer,
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.sign_message = mds_sign_message,
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.check_message_signature = mds_check_message_signature,
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.get_auth_request = mds_get_auth_request,
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@ -569,6 +569,34 @@ e_range:
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return -ERANGE;
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}
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static int decode_con_secret(void **p, void *end, u8 *con_secret,
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int *con_secret_len)
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{
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int len;
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ceph_decode_32_safe(p, end, len, bad);
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ceph_decode_need(p, end, len, bad);
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dout("%s len %d\n", __func__, len);
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if (con_secret) {
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if (len > CEPH_MAX_CON_SECRET_LEN) {
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pr_err("connection secret too big %d\n", len);
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goto bad_memzero;
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}
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memcpy(con_secret, *p, len);
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*con_secret_len = len;
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}
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memzero_explicit(*p, len);
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*p += len;
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return 0;
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bad_memzero:
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memzero_explicit(*p, len);
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bad:
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pr_err("failed to decode connection secret\n");
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return -EINVAL;
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}
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static int handle_auth_session_key(struct ceph_auth_client *ac,
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void **p, void *end,
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u8 *session_key, int *session_key_len,
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@ -612,17 +640,9 @@ static int handle_auth_session_key(struct ceph_auth_client *ac,
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dout("%s decrypted %d bytes\n", __func__, ret);
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dend = dp + ret;
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ceph_decode_32_safe(&dp, dend, len, e_inval);
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if (len > CEPH_MAX_CON_SECRET_LEN) {
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pr_err("connection secret too big %d\n", len);
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return -EINVAL;
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}
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dout("%s connection secret len %d\n", __func__, len);
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if (con_secret) {
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memcpy(con_secret, dp, len);
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*con_secret_len = len;
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}
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ret = decode_con_secret(&dp, dend, con_secret, con_secret_len);
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if (ret)
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return ret;
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}
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/* service tickets */
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@ -828,7 +848,6 @@ static int decrypt_authorizer_reply(struct ceph_crypto_key *secret,
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{
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void *dp, *dend;
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u8 struct_v;
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int len;
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int ret;
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dp = *p + ceph_x_encrypt_offset();
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@ -843,17 +862,9 @@ static int decrypt_authorizer_reply(struct ceph_crypto_key *secret,
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ceph_decode_64_safe(&dp, dend, *nonce_plus_one, e_inval);
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dout("%s nonce_plus_one %llu\n", __func__, *nonce_plus_one);
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if (struct_v >= 2) {
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ceph_decode_32_safe(&dp, dend, len, e_inval);
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if (len > CEPH_MAX_CON_SECRET_LEN) {
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pr_err("connection secret too big %d\n", len);
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return -EINVAL;
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}
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dout("%s connection secret len %d\n", __func__, len);
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if (con_secret) {
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memcpy(con_secret, dp, len);
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*con_secret_len = len;
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}
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ret = decode_con_secret(&dp, dend, con_secret, con_secret_len);
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if (ret)
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return ret;
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}
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return 0;
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@ -96,6 +96,7 @@ int ceph_crypto_key_decode(struct ceph_crypto_key *key, void **p, void *end)
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key->len = ceph_decode_16(p);
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ceph_decode_need(p, end, key->len, bad);
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ret = set_secret(key, *p);
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memzero_explicit(*p, key->len);
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*p += key->len;
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return ret;
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@ -134,7 +135,7 @@ int ceph_crypto_key_unarmor(struct ceph_crypto_key *key, const char *inkey)
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void ceph_crypto_key_destroy(struct ceph_crypto_key *key)
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{
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if (key) {
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kfree(key->key);
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kfree_sensitive(key->key);
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key->key = NULL;
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if (key->tfm) {
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crypto_free_sync_skcipher(key->tfm);
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@ -1100,7 +1100,7 @@ static int read_partial_message(struct ceph_connection *con)
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if (ret < 0)
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return ret;
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BUG_ON(!con->in_msg ^ skip);
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BUG_ON((!con->in_msg) ^ skip);
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if (skip) {
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/* skip this message */
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dout("alloc_msg said skip message\n");
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@ -689,11 +689,10 @@ static int verify_epilogue_crcs(struct ceph_connection *con, u32 front_crc,
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}
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static int setup_crypto(struct ceph_connection *con,
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u8 *session_key, int session_key_len,
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u8 *con_secret, int con_secret_len)
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const u8 *session_key, int session_key_len,
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const u8 *con_secret, int con_secret_len)
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{
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unsigned int noio_flag;
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void *p;
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int ret;
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dout("%s con %p con_mode %d session_key_len %d con_secret_len %d\n",
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@ -751,15 +750,14 @@ static int setup_crypto(struct ceph_connection *con,
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return ret;
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}
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p = con_secret;
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WARN_ON((unsigned long)p & crypto_aead_alignmask(con->v2.gcm_tfm));
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ret = crypto_aead_setkey(con->v2.gcm_tfm, p, CEPH_GCM_KEY_LEN);
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WARN_ON((unsigned long)con_secret &
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crypto_aead_alignmask(con->v2.gcm_tfm));
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ret = crypto_aead_setkey(con->v2.gcm_tfm, con_secret, CEPH_GCM_KEY_LEN);
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if (ret) {
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pr_err("failed to set gcm key: %d\n", ret);
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return ret;
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}
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p += CEPH_GCM_KEY_LEN;
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WARN_ON(crypto_aead_ivsize(con->v2.gcm_tfm) != CEPH_GCM_IV_LEN);
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ret = crypto_aead_setauthsize(con->v2.gcm_tfm, CEPH_GCM_TAG_LEN);
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if (ret) {
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@ -777,8 +775,11 @@ static int setup_crypto(struct ceph_connection *con,
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aead_request_set_callback(con->v2.gcm_req, CRYPTO_TFM_REQ_MAY_BACKLOG,
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crypto_req_done, &con->v2.gcm_wait);
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memcpy(&con->v2.in_gcm_nonce, p, CEPH_GCM_IV_LEN);
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memcpy(&con->v2.out_gcm_nonce, p + CEPH_GCM_IV_LEN, CEPH_GCM_IV_LEN);
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memcpy(&con->v2.in_gcm_nonce, con_secret + CEPH_GCM_KEY_LEN,
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CEPH_GCM_IV_LEN);
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memcpy(&con->v2.out_gcm_nonce,
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con_secret + CEPH_GCM_KEY_LEN + CEPH_GCM_IV_LEN,
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CEPH_GCM_IV_LEN);
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return 0; /* auth_x, secure mode */
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}
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@ -800,7 +801,7 @@ static int hmac_sha256(struct ceph_connection *con, const struct kvec *kvecs,
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desc->tfm = con->v2.hmac_tfm;
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ret = crypto_shash_init(desc);
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if (ret)
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return ret;
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goto out;
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for (i = 0; i < kvec_cnt; i++) {
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WARN_ON((unsigned long)kvecs[i].iov_base &
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@ -808,15 +809,14 @@ static int hmac_sha256(struct ceph_connection *con, const struct kvec *kvecs,
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ret = crypto_shash_update(desc, kvecs[i].iov_base,
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kvecs[i].iov_len);
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if (ret)
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return ret;
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goto out;
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}
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ret = crypto_shash_final(desc, hmac);
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if (ret)
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return ret;
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out:
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shash_desc_zero(desc);
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return 0; /* auth_x, both plain and secure modes */
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return ret; /* auth_x, both plain and secure modes */
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}
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static void gcm_inc_nonce(struct ceph_gcm_nonce *nonce)
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@ -2072,27 +2072,32 @@ static int process_auth_done(struct ceph_connection *con, void *p, void *end)
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if (con->state != CEPH_CON_S_V2_AUTH) {
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dout("%s con %p state changed to %d\n", __func__, con,
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con->state);
|
||||
return -EAGAIN;
|
||||
ret = -EAGAIN;
|
||||
goto out;
|
||||
}
|
||||
|
||||
dout("%s con %p handle_auth_done ret %d\n", __func__, con, ret);
|
||||
if (ret)
|
||||
return ret;
|
||||
goto out;
|
||||
|
||||
ret = setup_crypto(con, session_key, session_key_len, con_secret,
|
||||
con_secret_len);
|
||||
if (ret)
|
||||
return ret;
|
||||
goto out;
|
||||
|
||||
reset_out_kvecs(con);
|
||||
ret = prepare_auth_signature(con);
|
||||
if (ret) {
|
||||
pr_err("prepare_auth_signature failed: %d\n", ret);
|
||||
return ret;
|
||||
goto out;
|
||||
}
|
||||
|
||||
con->state = CEPH_CON_S_V2_AUTH_SIGNATURE;
|
||||
return 0;
|
||||
|
||||
out:
|
||||
memzero_explicit(session_key_buf, sizeof(session_key_buf));
|
||||
memzero_explicit(con_secret_buf, sizeof(con_secret_buf));
|
||||
return ret;
|
||||
|
||||
bad:
|
||||
pr_err("failed to decode auth_done\n");
|
||||
@ -3436,6 +3441,8 @@ void ceph_con_v2_reset_protocol(struct ceph_connection *con)
|
||||
}
|
||||
|
||||
con->v2.con_mode = CEPH_CON_MODE_UNKNOWN;
|
||||
memzero_explicit(&con->v2.in_gcm_nonce, CEPH_GCM_IV_LEN);
|
||||
memzero_explicit(&con->v2.out_gcm_nonce, CEPH_GCM_IV_LEN);
|
||||
|
||||
if (con->v2.hmac_tfm) {
|
||||
crypto_free_shash(con->v2.hmac_tfm);
|
||||
|
||||
@ -1433,7 +1433,7 @@ static int mon_handle_auth_bad_method(struct ceph_connection *con,
|
||||
/*
|
||||
* handle incoming message
|
||||
*/
|
||||
static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
|
||||
static void mon_dispatch(struct ceph_connection *con, struct ceph_msg *msg)
|
||||
{
|
||||
struct ceph_mon_client *monc = con->private;
|
||||
int type = le16_to_cpu(msg->hdr.type);
|
||||
@ -1565,21 +1565,21 @@ static void mon_fault(struct ceph_connection *con)
|
||||
* will come from the messenger workqueue, which is drained prior to
|
||||
* mon_client destruction.
|
||||
*/
|
||||
static struct ceph_connection *con_get(struct ceph_connection *con)
|
||||
static struct ceph_connection *mon_get_con(struct ceph_connection *con)
|
||||
{
|
||||
return con;
|
||||
}
|
||||
|
||||
static void con_put(struct ceph_connection *con)
|
||||
static void mon_put_con(struct ceph_connection *con)
|
||||
{
|
||||
}
|
||||
|
||||
static const struct ceph_connection_operations mon_con_ops = {
|
||||
.get = con_get,
|
||||
.put = con_put,
|
||||
.dispatch = dispatch,
|
||||
.fault = mon_fault,
|
||||
.get = mon_get_con,
|
||||
.put = mon_put_con,
|
||||
.alloc_msg = mon_alloc_msg,
|
||||
.dispatch = mon_dispatch,
|
||||
.fault = mon_fault,
|
||||
.get_auth_request = mon_get_auth_request,
|
||||
.handle_auth_reply_more = mon_handle_auth_reply_more,
|
||||
.handle_auth_done = mon_handle_auth_done,
|
||||
|
||||
@ -5412,7 +5412,7 @@ void ceph_osdc_cleanup(void)
|
||||
/*
|
||||
* handle incoming message
|
||||
*/
|
||||
static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
|
||||
static void osd_dispatch(struct ceph_connection *con, struct ceph_msg *msg)
|
||||
{
|
||||
struct ceph_osd *osd = con->private;
|
||||
struct ceph_osd_client *osdc = osd->o_osdc;
|
||||
@ -5534,9 +5534,9 @@ static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr)
|
||||
return m;
|
||||
}
|
||||
|
||||
static struct ceph_msg *alloc_msg(struct ceph_connection *con,
|
||||
struct ceph_msg_header *hdr,
|
||||
int *skip)
|
||||
static struct ceph_msg *osd_alloc_msg(struct ceph_connection *con,
|
||||
struct ceph_msg_header *hdr,
|
||||
int *skip)
|
||||
{
|
||||
struct ceph_osd *osd = con->private;
|
||||
int type = le16_to_cpu(hdr->type);
|
||||
@ -5560,7 +5560,7 @@ static struct ceph_msg *alloc_msg(struct ceph_connection *con,
|
||||
/*
|
||||
* Wrappers to refcount containing ceph_osd struct
|
||||
*/
|
||||
static struct ceph_connection *get_osd_con(struct ceph_connection *con)
|
||||
static struct ceph_connection *osd_get_con(struct ceph_connection *con)
|
||||
{
|
||||
struct ceph_osd *osd = con->private;
|
||||
if (get_osd(osd))
|
||||
@ -5568,7 +5568,7 @@ static struct ceph_connection *get_osd_con(struct ceph_connection *con)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static void put_osd_con(struct ceph_connection *con)
|
||||
static void osd_put_con(struct ceph_connection *con)
|
||||
{
|
||||
struct ceph_osd *osd = con->private;
|
||||
put_osd(osd);
|
||||
@ -5582,8 +5582,8 @@ static void put_osd_con(struct ceph_connection *con)
|
||||
* Note: returned pointer is the address of a structure that's
|
||||
* managed separately. Caller must *not* attempt to free it.
|
||||
*/
|
||||
static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
|
||||
int *proto, int force_new)
|
||||
static struct ceph_auth_handshake *
|
||||
osd_get_authorizer(struct ceph_connection *con, int *proto, int force_new)
|
||||
{
|
||||
struct ceph_osd *o = con->private;
|
||||
struct ceph_osd_client *osdc = o->o_osdc;
|
||||
@ -5599,7 +5599,7 @@ static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
|
||||
return auth;
|
||||
}
|
||||
|
||||
static int add_authorizer_challenge(struct ceph_connection *con,
|
||||
static int osd_add_authorizer_challenge(struct ceph_connection *con,
|
||||
void *challenge_buf, int challenge_buf_len)
|
||||
{
|
||||
struct ceph_osd *o = con->private;
|
||||
@ -5610,7 +5610,7 @@ static int add_authorizer_challenge(struct ceph_connection *con,
|
||||
challenge_buf, challenge_buf_len);
|
||||
}
|
||||
|
||||
static int verify_authorizer_reply(struct ceph_connection *con)
|
||||
static int osd_verify_authorizer_reply(struct ceph_connection *con)
|
||||
{
|
||||
struct ceph_osd *o = con->private;
|
||||
struct ceph_osd_client *osdc = o->o_osdc;
|
||||
@ -5622,7 +5622,7 @@ static int verify_authorizer_reply(struct ceph_connection *con)
|
||||
NULL, NULL, NULL, NULL);
|
||||
}
|
||||
|
||||
static int invalidate_authorizer(struct ceph_connection *con)
|
||||
static int osd_invalidate_authorizer(struct ceph_connection *con)
|
||||
{
|
||||
struct ceph_osd *o = con->private;
|
||||
struct ceph_osd_client *osdc = o->o_osdc;
|
||||
@ -5731,18 +5731,18 @@ static int osd_check_message_signature(struct ceph_msg *msg)
|
||||
}
|
||||
|
||||
static const struct ceph_connection_operations osd_con_ops = {
|
||||
.get = get_osd_con,
|
||||
.put = put_osd_con,
|
||||
.dispatch = dispatch,
|
||||
.get_authorizer = get_authorizer,
|
||||
.add_authorizer_challenge = add_authorizer_challenge,
|
||||
.verify_authorizer_reply = verify_authorizer_reply,
|
||||
.invalidate_authorizer = invalidate_authorizer,
|
||||
.alloc_msg = alloc_msg,
|
||||
.get = osd_get_con,
|
||||
.put = osd_put_con,
|
||||
.alloc_msg = osd_alloc_msg,
|
||||
.dispatch = osd_dispatch,
|
||||
.fault = osd_fault,
|
||||
.reencode_message = osd_reencode_message,
|
||||
.get_authorizer = osd_get_authorizer,
|
||||
.add_authorizer_challenge = osd_add_authorizer_challenge,
|
||||
.verify_authorizer_reply = osd_verify_authorizer_reply,
|
||||
.invalidate_authorizer = osd_invalidate_authorizer,
|
||||
.sign_message = osd_sign_message,
|
||||
.check_message_signature = osd_check_message_signature,
|
||||
.fault = osd_fault,
|
||||
.get_auth_request = osd_get_auth_request,
|
||||
.handle_auth_reply_more = osd_handle_auth_reply_more,
|
||||
.handle_auth_done = osd_handle_auth_done,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user