diff options
| author | Hans Dedecker <dedeckeh@gmail.com> | 2017-01-05 16:03:35 +0100 |
|---|---|---|
| committer | Hans Dedecker <dedeckeh@gmail.com> | 2017-01-05 17:03:11 +0100 |
| commit | 16cd87e8a76884802896495eb0e39461d8303c0f (patch) | |
| tree | 4af96ce4108427dca2679d8d2e88120842b504f5 /src/dhcpv6-ia.c | |
| parent | d6b0c9904f283a75d292030b7e0e968f37c1c7de (diff) | |
dhcpv6-ia: fix dereference after freeing assignment
Fix assignment dereference by dhcpv6_log in case
the assignment is freed when nothing has been
assigned.
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
Diffstat (limited to 'src/dhcpv6-ia.c')
| -rw-r--r-- | src/dhcpv6-ia.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/dhcpv6-ia.c b/src/dhcpv6-ia.c index 4e30faa..4c077db 100644 --- a/src/dhcpv6-ia.c +++ b/src/dhcpv6-ia.c @@ -1051,7 +1051,7 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface, ((is_pd && c->length <= 64) || (is_na && c->length == 128))) { a = c; - // Reset state + /* Reset state */ apply_lease(iface, a, false); memcpy(a->clid_data, clid_data, clid_len); a->clid_len = clid_len; @@ -1151,10 +1151,11 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface, a->accept_reconf = accept_reconf; a->flags |= OAF_BOUND; apply_lease(iface, a, true); - } else if (!assigned && a && a->managed_size == 0) + } else if (!assigned && a && a->managed_size == 0) { /* Cleanup failed assignment */ free_dhcpv6_assignment(a); - + a = NULL; + } } else if (hdr->msg_type == DHCPV6_MSG_RENEW || hdr->msg_type == DHCPV6_MSG_RELEASE || hdr->msg_type == DHCPV6_MSG_REBIND || |