A flaw was found in NGINX. There is a possible memory leak in ngx_resolver.c, which can affect service availability.
bugzilla.redhat.com/show_bug.cgi?id=2139153
hg.nginx.org/nginx/rev/0422365794f7
nvd.nist.gov/vuln/detail/CVE-2022-3638
www.cve.org/CVERecord?id=CVE-2022-3638