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EAP-pwd: Fix memory leak on error path with fragmentation

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If fragmentation is used, the temporary inbuf/outbuf could have been
leaked in error cases (e.g., reaching maximum number of roundtrips).

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2014-04-06 00:19:26 +03:00
parent 4fc412ae76
commit 48f668eecf
2 changed files with 8 additions and 0 deletions
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4
src/eap_peer/eap_pwd.c
View File

@ -161,6 +161,8 @@ static void eap_pwd_deinit(struct eap_sm *sm, void *priv)
BN_free(data->grp->prime); BN_free(data->grp->prime);
os_free(data->grp); os_free(data->grp);
} }
wpabuf_free(data->inbuf);
wpabuf_free(data->outbuf);
os_free(data); os_free(data);
} }
@ -773,6 +775,7 @@ eap_pwd_process(struct eap_sm *sm, void *priv, struct eap_method_ret *ret,
(int) data->in_frag_pos, (int) data->in_frag_pos,
(int) wpabuf_len(data->inbuf)); (int) wpabuf_len(data->inbuf));
wpabuf_free(data->inbuf); wpabuf_free(data->inbuf);
data->inbuf = NULL;
data->in_frag_pos = 0; data->in_frag_pos = 0;
return NULL; return NULL;
} }
@ -824,6 +827,7 @@ eap_pwd_process(struct eap_sm *sm, void *priv, struct eap_method_ret *ret,
*/ */
if (data->in_frag_pos) { if (data->in_frag_pos) {
wpabuf_free(data->inbuf); wpabuf_free(data->inbuf);
data->inbuf = NULL;
data->in_frag_pos = 0; data->in_frag_pos = 0;
} }

4
src/eap_server/eap_server_pwd.c
View File

@ -150,6 +150,8 @@ static void eap_pwd_reset(struct eap_sm *sm, void *priv)
BN_free(data->grp->prime); BN_free(data->grp->prime);
os_free(data->grp); os_free(data->grp);
} }
wpabuf_free(data->inbuf);
wpabuf_free(data->outbuf);
os_free(data); os_free(data);
} }
@ -523,6 +525,7 @@ eap_pwd_build_req(struct eap_sm *sm, void *priv, u8 id)
*/ */
if (data->out_frag_pos >= wpabuf_len(data->outbuf)) { if (data->out_frag_pos >= wpabuf_len(data->outbuf)) {
wpabuf_free(data->outbuf); wpabuf_free(data->outbuf);
data->outbuf = NULL;
data->out_frag_pos = 0; data->out_frag_pos = 0;
} }
@ -949,6 +952,7 @@ static void eap_pwd_process(struct eap_sm *sm, void *priv,
*/ */
if (data->in_frag_pos) { if (data->in_frag_pos) {
wpabuf_free(data->inbuf); wpabuf_free(data->inbuf);
data->inbuf = NULL;
data->in_frag_pos = 0; data->in_frag_pos = 0;
} }
} }