single_domain: Invalid memory access for empty string input
We noticed a small buglet in ares_search() when it gets an empty string as input -- the single_domain() utility function in ares_search.c accesses invalid memory (before the start of the string).
This commit is contained in:
parent
c8ec633bf5
commit
4aa1fc4163
|
@ -239,7 +239,7 @@ static int single_domain(ares_channel channel, const char *name, char **s)
|
|||
/* If the name contains a trailing dot, then the single query is the name
|
||||
* sans the trailing dot.
|
||||
*/
|
||||
if (name[len - 1] == '.')
|
||||
if ((len > 0) && (name[len - 1] == '.'))
|
||||
{
|
||||
*s = strdup(name);
|
||||
return (*s) ? ARES_SUCCESS : ARES_ENOMEM;
|
||||
|
|
Loading…
Reference in New Issue