From: Sergey Kandaurov <pluknet@nginx.com>
Date: Wed, 22 Sep 2021 11:10:43 +0000 (+0300)
Subject: HTTP/3: fixed null pointer dereference with server push.
X-Git-Tag: release-1.25.0~4^2~245
X-Git-Url: http://git.kaiwu.me/postgresql/log/contrib/postgres_fdw/postgres_fdw.c?a=commitdiff_plain;h=2cd173d450cbb61291c772556609bcfbc9da1170;p=nginx.git

HTTP/3: fixed null pointer dereference with server push.

See details for HTTP/2 fix in 8b0553239592 for a complete description.
---

diff --git a/src/http/v3/ngx_http_v3_filter_module.c b/src/http/v3/ngx_http_v3_filter_module.c
index 43d2cd1bd..a88b32f07 100644
--- a/src/http/v3/ngx_http_v3_filter_module.c
+++ b/src/http/v3/ngx_http_v3_filter_module.c
@@ -858,6 +858,10 @@ ngx_http_v3_push_resource(ngx_http_request_t *r, ngx_str_t *path,
         return NGX_ABORT;
     }
 
+    if (r->headers_in.host == NULL) {
+        return NGX_ABORT;
+    }
+
     push_id = h3c->next_push_id++;
 
     rc = ngx_http_v3_create_push_request(r, path, push_id);