Module: kamailio Branch: master Commit: d8257e3c947c5619456dedcea51d28691a70fd84 URL: https://github.com/kamailio/kamailio/commit/d8257e3c947c5619456dedcea51d286… Author: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Committer: GitHub &lt;noreply(a)github.com&gt; Date: 2021-01-05T16:30:11+01:00 Merge pull request #2595 from theraphim/master Fix 2 issues that prevent auto_bind_ipv6 from happening on my setup --- Modified: src/core/socket_info.c --- Diff: https://github.com/kamailio/kamailio/commit/d8257e3c947c5619456dedcea51d286… Patch: https://github.com/kamailio/kamailio/commit/d8257e3c947c5619456dedcea51d286… --- diff --git a/src/core/socket_info.c b/src/core/socket_info.c index a46aba24ad..d55f506bcc 100644 --- a/src/core/socket_info.c +++ b/src/core/socket_info.c @@ -1070,6 +1070,7 @@ static int nl_bound_sock(void) req.g.rtgen_family = family;\ } while(0); +#define NETLINK_BUFFER_SIZE 32768 static int get_flags(int family){ struct { @@ -1079,12 +1080,12 @@ static int get_flags(int family){ int rtn = 0; struct nlmsghdr* nlp; struct ifinfomsg *ifi; - char buf[8192]; + char buf[NETLINK_BUFFER_SIZE]; char *p = buf; int nll = 0; int nl_sock = -1; - fill_nl_req(req, RTM_GETLINK, AF_INET); + fill_nl_req(req, RTM_GETLINK, family); if((nl_sock = nl_bound_sock()) < 0) return -1; @@ -1095,6 +1096,10 @@ static int get_flags(int family){ } while(1) { + if ((sizeof(buf) - nll) == 0) { + LM_ERR("netlink buffer overflow in get_flags"); + goto error; + } rtn = recv(nl_sock, p, sizeof(buf) - nll, 0); nlp = (struct nlmsghdr *) p; if(nlp->nlmsg_type == NLMSG_DONE){ @@ -1148,7 +1153,7 @@ static int build_iface_list(void) struct nlmsghdr* nlp; struct ifaddrmsg *ifi; int rtl; - char buf[8192]; + char buf[NETLINK_BUFFER_SIZE]; char *p = buf; int nll = 0; struct rtattr * rtap; @@ -1184,6 +1189,10 @@ static int build_iface_list(void) nll = 0; p = buf; while(1) { + if ((sizeof(buf) - nll) == 0) { + LM_ERR("netlink buffer overflow in build_iface_list"); + goto error; + } rtn = recv(nl_sock, p, sizeof(buf) - nll, 0); LM_DBG("received %d byles \n", rtn); nlp = (struct nlmsghdr *) p;