From: Daniel Stenberg <daniel@haxx.se>
Date: Wed, 12 Nov 2025 10:59:25 +0000 (+0100)
Subject: hostip: don't store negative lookup on OOM
X-Git-Tag: rc-8_18_0-1~337
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a862920246b1b7b3852463eb5102dc85e070c95b;p=thirdparty%2Fcurl.git

hostip: don't store negative lookup on OOM

When convert_ipaddr_direct() returns error due to OOM, it must not be
stored as a negative cache result.

Closes #19484
---

diff --git a/lib/hostip.c b/lib/hostip.c
index 7e2551d8f3..ff7ac18c99 100644
--- a/lib/hostip.c
+++ b/lib/hostip.c
@@ -904,8 +904,10 @@ CURLcode Curl_resolv(struct Curl_easy *data,
 
 #ifndef USE_RESOLVE_ON_IPS
   /* allowed to convert, hostname is IP address, then NULL means error */
-  if(is_ipaddr)
+  if(is_ipaddr) {
+    keep_negative = FALSE;
     goto error;
+  }
 #endif
 
   /* Really need a resolver for hostname. */