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Fix null-deref in os_get_host_and_cname_by_name when ai_canonname is NULL #5875

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Fix null-deref in os_get_host_and_cname_by_name when ai_canonname is NULL #5875

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2 changes: 1 addition & 1 deletion util/bb_oscompat.c
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Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,7 @@ static int os_get_host_and_cname_by_name(char **name_ptr, struct in_addr *addr,
}

if (cname != NULL)
*cname = strdup(res->ai_canonname);
*cname = res->ai_canonname ? strdup(res->ai_canonname) : NULL;

freeaddrinfo(res);
return 0;
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