The mod_http2 Apache httpd module implements the HTTP2 protocol on top of libnghttp2 for httpd 2.4 servers. Security Fix: httpd: mod_http2: DoS in HTTP/2 with initial window size 0 mod_http2: reset requests exhaust memory For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.4 Release Notes linked from the References section.