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Fixing another possible NULL dereference, in getTracePort() in traceroute.cc. Found with Coverity, CID 29

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kris
2007-11-16 03:45:03 +00:00
parent ad7b6e416b
commit 477214a779
1 changed files with 6 additions and 1 deletions
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7
traceroute.cc
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@@ -326,6 +326,7 @@ Traceroute::getTracePort (u8 proto, Target * t) {
u16 filtered_port = 1; u16 filtered_port = 1;
u16 state = 0; u16 state = 0;
u16 port = 0; u16 port = 0;
struct Port *np;
/* Use the first specified port for ping traceroutes */ /* Use the first specified port for ping traceroutes */
if (o.pingscan) { if (o.pingscan) {
@@ -360,7 +361,11 @@ Traceroute::getTracePort (u8 proto, Target * t) {
return -1; return -1;
} }
port = t->ports.nextPort (NULL, proto, state)->portno; np = t->ports.nextPort (NULL, proto, state);
if (!np)
return -1;
port = np->portno;
/* If this is a protocol scan traceroute and we are using /* If this is a protocol scan traceroute and we are using
* one of the major protocols, set up the required information * one of the major protocols, set up the required information