Red Hat Product Errata RHSA-2026:57642 - Security Advisory Issued: 2026-08-20 Updated: 2026-08-20 RHSA-2026:57642 - Security Advisory Overview Updated Packages Synopsis Moderate: mod_md security update Type/Severity Security Advisory: Moderate Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for mod_md is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description This module manages common properties of domains for one or more virtual hosts. Specifically it can use the ACME protocol to automate certificate provisioning. Certificates will be configured for managed domains and their virtual hosts automatically, including at renewal. Security Fix(es): httpd: mod_md: unrestricted OCSP response leads to resource exhaustion (CVE-2026-29168) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat Enterprise Linux Server - AUS 9.2 x86_64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.2 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.2 x86_64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.2 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.2 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.2 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.2 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.2 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.2 s390x Fixes BZ - 2466753 - CVE-2026-29168 httpd: mod_md: unrestricted OCSP response leads to resource exhaustion CVEs CVE-2026-29168 References https://access.redhat.com/security/updates/classification/#moderate Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux Server - AUS 9.2 SRPM mod_md-2.4.19-1.el9_2.2.src.rpm SHA-256: 6781f0d1bdad4163af31312dd18416ea30d9183b82dc1cec66ac5ebef23787be x86_64 mod_md-2.4.19-1.el9_2.2.x86_64.rpm SHA-256: ae9d552fd180ca16de5cdac5d08237b1533b900ac32e41b5bc6b7588447d50dd mod_md-debuginfo-2.4.19-1.el9_2.2.x86_64.rpm SHA-256: afa64a3ff49915636bb8937f6d14c69c7dcb6a9fd4568ebb06cea6fb7f46006f mod_md-debugsource-2.4.19-1.el9_2.2.x86_64.rpm SHA-256: 117a7e661b6d5dd17fd97c21c1e82a6a58f283e754282ff3392f6a523f6e2c5e Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.2 SRPM mod_md-2.4.19-1.el9_2.2.src.rpm SHA-256: 6781f0d1bdad4163af31312dd18416ea30d9183b82dc1cec66ac5ebef23787be ppc64le mod_md-2.4.19-1.el9_2.2.ppc64le.rpm SHA-256: 36d6ad706e1d750ddf42a7be4a5893eb6ebae8dbaa8d2f2453bd8c87d188da06 mod_md-debuginfo-2.4.19-1.el9_2.2.ppc64le.rpm SHA-256: 6fa534bf8969e94984dfa424f359abfefab85458696d3d5388d27483737f99cb mod_md-debugsource-2.4.19-1.el9_2.2.ppc64le.rpm SHA-256: 39e0dbbc7cd158d6e82f5bdd502e9f6736e1696605a64acd848b82883edeced6 Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.2 SRPM mod_md-2.4.19-1.el9_2.2.src.rpm SHA-256: 6781f0d1bdad4163af31312dd18416ea30d9183b82dc1cec66ac5ebef23787be x86_64 mod_md-2.4.19-1.el9_2.2.x86_64.rpm SHA-256: ae9d552fd180ca16de5cdac5d08237b1533b900ac32e41b5bc6b7588447d50dd mod_md-debuginfo-2.4.19-1.el9_2.2.x86_64.rpm SHA-256: afa64a3ff49915636bb8937f6d14c69c7dcb6a9fd4568ebb06cea6fb7f46006f mod_md-debugsource-2.4.19-1.el9_2.2.x86_64.rpm SHA-256: 117a7e661b6d5dd17fd97c21c1e82a6a58f283e754282ff3392f6a523f6e2c5e Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.2 SRPM mod_md-2.4.19-1.el9_2.2.src.rpm SHA-256: 6781f0d1bdad4163af31312dd18416ea30d9183b82dc1cec66ac5ebef23787be aarch64 mod_md-2.4.19-1.el9_2.2.aarch64.rpm SHA-256: 5f7e970d18b0a67c80d9585db10b05a80ff3bb6d196c8256a0316e0a96a7c341 mod_md-debuginfo-2.4.19-1.el9_2.2.aarch64.rpm SHA-256: 4e7aa2ca141378cb18c5f55dd5de281af2b2e597445ca01a02f4c1fa60ca64f8 mod_md-debugsource-2.4.19-1.el9_2.2.aarch64.rpm SHA-256: ecde595a73f2e051e591445156555ec4086e828a4f3bda831003e0721ceae35e Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.2 SRPM mod_md-2.4.19-1.el9_2.2.src.rpm SHA-256: 6781f0d1bdad4163af31312dd18416ea30d9183b82dc1cec66ac5ebef23787be s390x mod_md-2.4.19-1.el9_2.2.s390x.rpm SHA-256: 16da99b3cfaff6e608529849fbe148fe68624f18eca878a98a6868a452b4d054 mod_md-debuginfo-2.4.19-1.el9_2.2.s390x.rpm SHA-256: 2c2a3af9de7ccd9bdf8d955b66f496c234ac29d0f1ec1db23f52cab2a5b791a3 mod_md-debugsource-2.4.19-1.el9_2.2.s390x.rpm SHA-256: faba41a8e7bcb57632ce13c48b93e89ed0546ae0b691eb484272d2a59a855eff Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.2 SRPM mod_md-2.4.19-1.el9_2.2.src.rpm SHA-256: 6781f0d1bdad4163af31312dd18416ea30d9183b82dc1cec66ac5ebef23787be x86_64 mod_md-2.4.19-1.el9_2.2.x86_64.rpm SHA-256: ae9d552fd180ca16de5cdac5d08237b1533b900ac32e41b5bc6b7588447d50dd mod_md-debuginfo-2.4.19-1.el9_2.2.x86_64.rpm SHA-256: afa64a3ff49915636bb8937f6d14c69c7dcb6a9fd4568ebb06cea6fb7f46006f mod_md-debugsource-2.4.19-1.el9_2.2.x86_64.rpm SHA-256: 117a7e661b6d5dd17fd97c21c1e82a6a58f283e754282ff3392f6a523f6e2c5e Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.2 SRPM mod_md-2.4.19-1.el9_2.2.src.rpm SHA-256: 6781f0d1bdad4163af31312dd18416ea30d9183b82dc1cec66ac5ebef23787be aarch64 mod_md-2.4.19-1.el9_2.2.aarch64.rpm SHA-256: 5f7e970d18b0a67c80d9585db10b05a80ff3bb6d196c8256a0316e0a96a7c341 mod_md-debuginfo-2.4.19-1.el9_2.2.aarch64.rpm SHA-256: 4e7aa2ca141378cb18c5f55dd5de281af2b2e597445ca01a02f4c1fa60ca64f8 mod_md-debugsource-2.4.19-1.el9_2.2.aarch64.rpm SHA-256: ecde595a73f2e051e591445156555ec4086e828a4f3bda831003e0721ceae35e Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.2 SRPM mod_md-2.4.19-1.el9_2.2.src.rpm SHA-256: 6781f0d1bdad4163af31312dd18416ea30d9183b82dc1cec66ac5ebef23787be ppc64le mod_md-2.4.19-1.el9_2.2.ppc64le.rpm SHA-256: 36d6ad706e1d750ddf42a7be4a5893eb6ebae8dbaa8d2f2453bd8c87d188da06 mod_md-debuginfo-2.4.19-1.el9_2.2.ppc64le.rpm SHA-256: 6fa534bf8969e94984dfa424f359abfefab85458696d3d5388d27483737f99cb mod_md-debugsource-2.4.19-1.el9_2.2.ppc64le.rpm SHA-256: 39e0dbbc7cd158d6e82f5bdd502e9f6736e1696605a64acd848b82883edeced6 Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.2 SRPM mod_md-2.4.19-1.el9_2.2.src.rpm SHA-256: 6781f0d1bdad4163af31312dd18416ea30d9183b82dc1cec66ac5ebef23787be s390x mod_md-2.4.19-1.el9_2.2.s390x.rpm SHA-256: 16da99b3cfaff6e608529849fbe148fe68624f18eca878a98a6868a452b4d054 mod_md-debuginfo-2.4.19-1.el9_2.2.s390x.rpm SHA-256: 2c2a3af9de7ccd9bdf8d955b66f496c234ac29d0f1ec1db23f52cab2a5b791a3 mod_md-debugsource-2.4.19-1.el9_2.2.s390x.rpm SHA-256: faba41a8e7bcb57632ce13c48b93e89ed0546ae0b691eb484272d2a59a855eff The Red Hat security contact is secalert@redhat.com . More contact details at https://access.redhat.com/security/team/contact/ .