Red Hat Product Errata RHSA-2026:42041 - Security Advisory Issued: 2026-07-20 Updated: 2026-07-20 RHSA-2026:42041 - Security Advisory Overview Updated Packages Synopsis Important: pacemaker security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for pacemaker is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. 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 The Pacemaker cluster resource manager is a collection of technologies working together to maintain data integrity and application availability in the event of failures. Security Fix(es): pacemaker: Pacemaker: Denial of Service via integer overflow in remote message decompression (CVE-2026-10649) 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 for x86_64 - Extended Life Cycle Long Life 8.8 x86_64 Red Hat Enterprise Linux Server - TUS 8.8 x86_64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le Red Hat Enterprise Linux High Availability for Power LE - Update Services for SAP Solutions 8.8 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64 Red Hat Enterprise Linux High Availability for x86_64 - Update Services for SAP Solutions 8.8 x86_64 Red Hat Enterprise Linux High Availability for x86_64 - Telecommunications Update Service 8.8 x86_64 Red Hat Enterprise Linux High Availability for x86_64 - Extended Life Cycle Long Life 8.8 x86_64 Fixes BZ - 2462817 - CVE-2026-10649 pacemaker: Pacemaker: Denial of Service via integer overflow in remote message decompression CVEs CVE-2026-10649 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.8 SRPM pacemaker-2.1.5-9.7.el8_8.src.rpm SHA-256: 09b5edd35c830d717ec020001d045e93cdf5610237230e5f28c14a0a7516990b x86_64 pacemaker-cli-debuginfo-2.1.5-9.7.el8_8.i686.rpm SHA-256: 1834d51aa7e557374c8e32a584c69dcaaadea7738ae8f1cde911449f7f0366e7 pacemaker-cli-debuginfo-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: bd7beab29233acbf3a2fb5d478b8dd40bce31c35b9ac8293c0ef3494f8ee54c8 pacemaker-cluster-libs-2.1.5-9.7.el8_8.i686.rpm SHA-256: 7d70b8718e75dc73ccd9c7968a3d775a70551feabd29cf13b6ba328aec01717c pacemaker-cluster-libs-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: bd32ecefc64e5713a620e06fa0a46591138c4d10adac1730e654362a385a5806 pacemaker-cluster-libs-debuginfo-2.1.5-9.7.el8_8.i686.rpm SHA-256: 48fd9bb5ac06d0d8de878c48e883c628fefb2c53bbde8fec19349700ee2b4a5e pacemaker-cluster-libs-debuginfo-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: 516a1dce245e0b802ae61cd8455bfbd400017fac16207c90ce077efe035860db pacemaker-debuginfo-2.1.5-9.7.el8_8.i686.rpm SHA-256: e34f7a7a5cce0b47601eea8d415595b14e91883e3d4e9e85b4475d43c5ac5ef9 pacemaker-debuginfo-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: 974d369b073be0a727dccb6cd3e8e2585fd4dfb3f38f3b35ee6074d832bb5d5c pacemaker-debugsource-2.1.5-9.7.el8_8.i686.rpm SHA-256: 979619fffb89de5c0423c1561ce3de4c3254d47bccb6308b98deddd5df4cb028 pacemaker-debugsource-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: 1b712d306e840371e0bdf83fb93809abc3a022de7ad4f9bdd4af94adf96f600c pacemaker-libs-2.1.5-9.7.el8_8.i686.rpm SHA-256: 39596fb6b92f73d3f070c91b7e592532b2286b2e6bafa4577e6554006cce4623 pacemaker-libs-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: b49caed4e6465655d5178ad047d6b24a5c68d94bfc0d56b6d913b1cd483ffb52 pacemaker-libs-debuginfo-2.1.5-9.7.el8_8.i686.rpm SHA-256: befa29c58d03822e14160b7f7918b1acbe86cedf0fb1ac1826e21b4b7edd7e6c pacemaker-libs-debuginfo-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: a9f9c1e32d5fc22d4c9e1fff757e598d90931bfd46da41a0ef3467647c46437b pacemaker-remote-debuginfo-2.1.5-9.7.el8_8.i686.rpm SHA-256: 2a9e77d6c47eda4964f22aa78a9ddcbeefd0e99e35b5bb39d76c57be6549279d pacemaker-remote-debuginfo-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: 1029efa665afe893835acc508405984e684229fd88de85991a95993eb156e966 pacemaker-schemas-2.1.5-9.7.el8_8.noarch.rpm SHA-256: 1c75e86ca2a51e315be58dddc1daf06e69bb6c9cd5552a1dc83d13a57425312a Red Hat Enterprise Linux Server - TUS 8.8 SRPM pacemaker-2.1.5-9.7.el8_8.src.rpm SHA-256: 09b5edd35c830d717ec020001d045e93cdf5610237230e5f28c14a0a7516990b x86_64 pacemaker-cli-debuginfo-2.1.5-9.7.el8_8.i686.rpm SHA-256: 1834d51aa7e557374c8e32a584c69dcaaadea7738ae8f1cde911449f7f0366e7 pacemaker-cli-debuginfo-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: bd7beab29233acbf3a2fb5d478b8dd40bce31c35b9ac8293c0ef3494f8ee54c8 pacemaker-cluster-libs-2.1.5-9.7.el8_8.i686.rpm SHA-256: 7d70b8718e75dc73ccd9c7968a3d775a70551feabd29cf13b6ba328aec01717c pacemaker-cluster-libs-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: bd32ecefc64e5713a620e06fa0a46591138c4d10adac1730e654362a385a5806 pacemaker-cluster-libs-debuginfo-2.1.5-9.7.el8_8.i686.rpm SHA-256: 48fd9bb5ac06d0d8de878c48e883c628fefb2c53bbde8fec19349700ee2b4a5e pacemaker-cluster-libs-debuginfo-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: 516a1dce245e0b802ae61cd8455bfbd400017fac16207c90ce077efe035860db pacemaker-debuginfo-2.1.5-9.7.el8_8.i686.rpm SHA-256: e34f7a7a5cce0b47601eea8d415595b14e91883e3d4e9e85b4475d43c5ac5ef9 pacemaker-debuginfo-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: 974d369b073be0a727dccb6cd3e8e2585fd4dfb3f38f3b35ee6074d832bb5d5c pacemaker-debugsource-2.1.5-9.7.el8_8.i686.rpm SHA-256: 979619fffb89de5c0423c1561ce3de4c3254d47bccb6308b98deddd5df4cb028 pacemaker-debugsource-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: 1b712d306e840371e0bdf83fb93809abc3a022de7ad4f9bdd4af94adf96f600c pacemaker-libs-2.1.5-9.7.el8_8.i686.rpm SHA-256: 39596fb6b92f73d3f070c91b7e592532b2286b2e6bafa4577e6554006cce4623 pacemaker-libs-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: b49caed4e6465655d5178ad047d6b24a5c68d94bfc0d56b6d913b1cd483ffb52 pacemaker-libs-debuginfo-2.1.5-9.7.el8_8.i686.rpm SHA-256: befa29c58d03822e14160b7f7918b1acbe86cedf0fb1ac1826e21b4b7edd7e6c pacemaker-libs-debuginfo-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: a9f9c1e32d5fc22d4c9e1fff757e598d90931bfd46da41a0ef3467647c46437b pacemaker-remote-debuginfo-2.1.5-9.7.el8_8.i686.rpm SHA-256: 2a9e77d6c47eda4964f22aa78a9ddcbeefd0e99e35b5bb39d76c57be6549279d pacemaker-remote-debuginfo-2.1.5-9.7.el8_8.x86_64.rpm SHA-256: 1029efa665afe893835acc508405984e684229fd88de85991a95993eb156e966 pacemaker-schemas-2.1.5-9.7.el8_8.noarch.rpm SHA-256: 1c75e86ca2a51e315be58dddc1daf06e69bb6c9cd5552a1dc83d13a57425312a Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 SRPM pacemaker-2.1.5-9.7.el8_8.src.rpm SHA-256: 09b5edd35c830d717ec020001d045e93cdf5610237230e5f28c14a0a7516990b ppc64le pacemaker-cli-debuginfo-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: 869244d3fa72d39a87e9347a4c0d8d37900891254f00ada98cf7b9c2800ac64f pacemaker-cluster-libs-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: c89843a6e46ff70449b0f0cdeebdf94e11ce472ffbf954186ee10737bd64dc1c pacemaker-cluster-libs-debuginfo-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: 98fea4a08f01de548b296e10349622721e1261e5d9e7e8842f8363bb5d83056d pacemaker-debuginfo-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: dae959f3d0a18817c9ad685303786ec458546d7224f796f9f32f0b78ffe8cebe pacemaker-debugsource-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: ff0b23bacc555f213619ff52cd1b828caadb45e3bce7ba52a18b0ebae14cb4c7 pacemaker-libs-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: 56d51ba11505628589ea7953d45118ba46bc28af16db2b671cfcc18bcab214ec pacemaker-libs-debuginfo-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: 4f9a109bdf93e4fab472dad86dbb22c2f2a6dd4eef28a41dbbf636b799f1549b pacemaker-remote-debuginfo-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: 8bd63cf92d31f84acf9ef6d7e3e8a10e765aa137116f34af71823552a2e89971 pacemaker-schemas-2.1.5-9.7.el8_8.noarch.rpm SHA-256: 1c75e86ca2a51e315be58dddc1daf06e69bb6c9cd5552a1dc83d13a57425312a Red Hat Enterprise Linux High Availability for Power LE - Update Services for SAP Solutions 8.8 SRPM ppc64le pacemaker-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: f9b6e5869e3e6a3bb64b74b8629865ec9c7df5d8a1ded44651b12cef6bce055e pacemaker-cli-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: e9ad4d40502e28f3cb58b64e15320edc3f88f49e31ee9610c1c7043ebea578d6 pacemaker-cli-debuginfo-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: 869244d3fa72d39a87e9347a4c0d8d37900891254f00ada98cf7b9c2800ac64f pacemaker-cluster-libs-debuginfo-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: 98fea4a08f01de548b296e10349622721e1261e5d9e7e8842f8363bb5d83056d pacemaker-cts-2.1.5-9.7.el8_8.noarch.rpm SHA-256: 02783d3a73835ac508c096657d74eb7bc1e4bf84e323b7c3f7792644929f71d7 pacemaker-debuginfo-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: dae959f3d0a18817c9ad685303786ec458546d7224f796f9f32f0b78ffe8cebe pacemaker-debugsource-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: ff0b23bacc555f213619ff52cd1b828caadb45e3bce7ba52a18b0ebae14cb4c7 pacemaker-doc-2.1.5-9.7.el8_8.noarch.rpm SHA-256: 27d83b5c1f71907b38f8688ac93581096ea4224b0786b3ec73ef1a22e0e4e7d5 pacemaker-libs-debuginfo-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: 4f9a109bdf93e4fab472dad86dbb22c2f2a6dd4eef28a41dbbf636b799f1549b pacemaker-libs-devel-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: 3284604515c49e18cee827f42f011375f748d18fb6ef759afb70abb897a522db pacemaker-nagios-plugins-metadata-2.1.5-9.7.el8_8.noarch.rpm SHA-256: 1347f2e1781c3d61160581320c71a7d9a988b68e5d2ef469571f3b129f565c9a pacemaker-remote-2.1.5-9.7.el8_8.ppc64le.rpm SHA-256: da3fb92d4edf3f39e87d168afa2110e82635cbe4511d178d3c12e78d656ece99 pacemaker-remote-d