Red Hat Product Errata RHSA-2026:41041 - Security Advisory Issued: 2026-07-16 Updated: 2026-07-16 RHSA-2026:41041 - 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 10.0 Extended Update Support. 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 Update Support 10.0 x86_64 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.0 s390x Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.0 ppc64le Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.0 aarch64 Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 10.0 x86_64 Red Hat Enterprise Linux High Availability for Power, little endian - Extended Update Support 10.0 ppc64le Red Hat Enterprise Linux High Availability (for IBM z Systems) - Extended Update Support 10.0 s390x Red Hat Enterprise Linux High Availability (for ARM 64) - Extended Update Support 10.0 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.0 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.0 s390x Red Hat Enterprise Linux High Availability for ARM 64 - 4 years of updates 10.0 aarch64 Red Hat Enterprise Linux High Availability for IBM z Systems - 4 years of updates 10.0 s390x Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.0 ppc64le Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.0 x86_64 Red Hat Enterprise Linux High Availability for Power, little endian - 4 years of updates 10.0 ppc64le Red Hat Enterprise Linux High Availability for x86_64 - 4 years of updates 10.0 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 Update Support 10.0 SRPM pacemaker-3.0.0-5.3.el10_0.src.rpm SHA-256: 8d866732e82c3bc5a598c4bdaf47d666640ff2694de89d8e8d3c4a7746b72a36 x86_64 pacemaker-cli-debuginfo-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: 1c860fb05296cde1383dd04ddfa56fb5656ecbf9bd51489ce3b5c97dacdc1451 pacemaker-cluster-libs-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: e367e6fe227009f620f1a150c309188a11ae4420d4085c3c658cad763c637707 pacemaker-cluster-libs-debuginfo-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: eba77d3cdf37f578ba61d6474f71eea88bc41c379557b24d3ee970811de92cd7 pacemaker-debuginfo-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: 21b968682d41888481cb91771734766cbd0a1e48a385994fbbd568966b6736f2 pacemaker-debugsource-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: ae147d3c77ca2d65c9cdfa81ee087a2d9beb4e12634b2065919597bf2a2af483 pacemaker-libs-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: ffdd5e7c1ec7a77cf087ca7e3d29d7bcfc2c18e5a4d10ee84d8d562effddf287 pacemaker-libs-debuginfo-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: fd9466b16ec780f615bd47adc19e16cefc5b2172dbcd5b1bbdc05b7a6478e48c pacemaker-remote-debuginfo-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: a4f906349927e2eb0075760049008ed759faf13738aef2e849d442f214715d5c pacemaker-schemas-3.0.0-5.3.el10_0.noarch.rpm SHA-256: 669198ed22d8d1e30b831a7de5fbddf664211193f3cb2f8d7bc8260324ee4d04 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.0 SRPM pacemaker-3.0.0-5.3.el10_0.src.rpm SHA-256: 8d866732e82c3bc5a598c4bdaf47d666640ff2694de89d8e8d3c4a7746b72a36 s390x pacemaker-cli-debuginfo-3.0.0-5.3.el10_0.s390x.rpm SHA-256: 7ecff6d07462be53c45628e59e8aba171b227e274921060d5a41d5e94c8e2fa6 pacemaker-cluster-libs-3.0.0-5.3.el10_0.s390x.rpm SHA-256: 0bbb23ae9642f4d6c96d5952c1e67e480646d86d980873e3ce4633550f4bea4b pacemaker-cluster-libs-debuginfo-3.0.0-5.3.el10_0.s390x.rpm SHA-256: 092d41e26b4e5fb94b9a79a9c4d700b95d4339434eb3d5d80d356bbbf3087665 pacemaker-debuginfo-3.0.0-5.3.el10_0.s390x.rpm SHA-256: b31438251404ef0ace48daaf5e310000ab0a4a60b44d74ab5cc630adf7bab370 pacemaker-debugsource-3.0.0-5.3.el10_0.s390x.rpm SHA-256: 82b720dab65069b8c9b6d67fa0e2b2f9d1653fd38e583c94a19179a8b07f1e23 pacemaker-libs-3.0.0-5.3.el10_0.s390x.rpm SHA-256: 8749e7d7bccbea6b7d08e5987fef9384f2ff95a3de4697f307e62b6486126bf9 pacemaker-libs-debuginfo-3.0.0-5.3.el10_0.s390x.rpm SHA-256: 1d7782a45fb86a0900e397f612949cd66fbbcded466e0c2af0a0c137e18ce017 pacemaker-remote-debuginfo-3.0.0-5.3.el10_0.s390x.rpm SHA-256: a3b11ad3b612d7f5e9303b936d853022fb20e33a7fcd360a606377985d19ccb3 pacemaker-schemas-3.0.0-5.3.el10_0.noarch.rpm SHA-256: 669198ed22d8d1e30b831a7de5fbddf664211193f3cb2f8d7bc8260324ee4d04 Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.0 SRPM pacemaker-3.0.0-5.3.el10_0.src.rpm SHA-256: 8d866732e82c3bc5a598c4bdaf47d666640ff2694de89d8e8d3c4a7746b72a36 ppc64le pacemaker-cli-debuginfo-3.0.0-5.3.el10_0.ppc64le.rpm SHA-256: dd41973e55e9892412c6f15d32ac17cc9240f92530cc23fefa87d5155a6ae423 pacemaker-cluster-libs-3.0.0-5.3.el10_0.ppc64le.rpm SHA-256: 83e0b5469bb482a28f5cf8f6866ba5b3ee39a2cc040c51e85d29a2d23f71f0d7 pacemaker-cluster-libs-debuginfo-3.0.0-5.3.el10_0.ppc64le.rpm SHA-256: 9986961407f143374c03c526e2cc2ff122b5e203f464113574221804737e4c2e pacemaker-debuginfo-3.0.0-5.3.el10_0.ppc64le.rpm SHA-256: 852c4f0f880418d60862c447089d8d620ef5f1a0850e38a57db55f4a228e3242 pacemaker-debugsource-3.0.0-5.3.el10_0.ppc64le.rpm SHA-256: 31b94ee8ebd72432a86a874b080129e3ecae797182df680ba1e2ec8c9304597e pacemaker-libs-3.0.0-5.3.el10_0.ppc64le.rpm SHA-256: 384ad0272d7e4c74e787095d0d810c570b1b5576ed57aef937645f5b0eef62ae pacemaker-libs-debuginfo-3.0.0-5.3.el10_0.ppc64le.rpm SHA-256: daa84f879eb39dbeb9bc2e1f16f014ec7322a05f74a8a6018e67c4155f7524fd pacemaker-remote-debuginfo-3.0.0-5.3.el10_0.ppc64le.rpm SHA-256: 91ff49f584d87a10a5a119ecfdff21be25af7a24f8a08387b4d9a76dd6508359 pacemaker-schemas-3.0.0-5.3.el10_0.noarch.rpm SHA-256: 669198ed22d8d1e30b831a7de5fbddf664211193f3cb2f8d7bc8260324ee4d04 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.0 SRPM pacemaker-3.0.0-5.3.el10_0.src.rpm SHA-256: 8d866732e82c3bc5a598c4bdaf47d666640ff2694de89d8e8d3c4a7746b72a36 aarch64 pacemaker-cli-debuginfo-3.0.0-5.3.el10_0.aarch64.rpm SHA-256: 645175436792d43fd23832a8c97894e3a75e76d2d34cf56695a49bfefdd320a5 pacemaker-cluster-libs-3.0.0-5.3.el10_0.aarch64.rpm SHA-256: 95dbd79d2b1f83f416f54e5329572dd937a996d1b024a2246fe348297b737d0b pacemaker-cluster-libs-debuginfo-3.0.0-5.3.el10_0.aarch64.rpm SHA-256: 5212ddcc001e030fb8667a50d9b6b2e1ef8b47f4eb00de1831e10048fcf01256 pacemaker-debuginfo-3.0.0-5.3.el10_0.aarch64.rpm SHA-256: 505ed199a67ebbaa16cf87eb50a971b557ffd661d808ef12a9fdc103bf17f17c pacemaker-debugsource-3.0.0-5.3.el10_0.aarch64.rpm SHA-256: c43bae2226a8feabebd2a66e0073bc9415e60d730d4826f6a5a1e079e87da0b8 pacemaker-libs-3.0.0-5.3.el10_0.aarch64.rpm SHA-256: e3954322729c9b261e09ec202e73a1fd034ede80d1bdb1b5c0809cc7d16e7ef8 pacemaker-libs-debuginfo-3.0.0-5.3.el10_0.aarch64.rpm SHA-256: 9eabca23089e5a492b687c83933bf394f2c6990f7d7396950eb401036c263040 pacemaker-remote-debuginfo-3.0.0-5.3.el10_0.aarch64.rpm SHA-256: 9d42f55f0451d48db373a60e17eb28929e550d8ed8b6b811fab8eeca358b2977 pacemaker-schemas-3.0.0-5.3.el10_0.noarch.rpm SHA-256: 669198ed22d8d1e30b831a7de5fbddf664211193f3cb2f8d7bc8260324ee4d04 Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 10.0 SRPM x86_64 pacemaker-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: 3d3e51e28eb027b553e57f7c71b7870fe10d6c2e09a7042025bfd42b0bfaedf6 pacemaker-cli-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: c268d934601fcfd542cf79241b17d20945807598d78b7dfaa780efd81adb4081 pacemaker-cli-debuginfo-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: 1c860fb05296cde1383dd04ddfa56fb5656ecbf9bd51489ce3b5c97dacdc1451 pacemaker-cluster-libs-debuginfo-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: eba77d3cdf37f578ba61d6474f71eea88bc41c379557b24d3ee970811de92cd7 pacemaker-cts-3.0.0-5.3.el10_0.noarch.rpm SHA-256: 2b1c6ad9ed587e299f7ffd408aa555f770ef68a1cb35bc1a2b3fc7e608ebd0ef pacemaker-debuginfo-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: 21b968682d41888481cb91771734766cbd0a1e48a385994fbbd568966b6736f2 pacemaker-debugsource-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: ae147d3c77ca2d65c9cdfa81ee087a2d9beb4e12634b2065919597bf2a2af483 pacemaker-doc-3.0.0-5.3.el10_0.noarch.rpm SHA-256: 6b811170b3dddc78884057d1e5e9868e6fa23be7966983287219449363d1a907 pacemaker-libs-debuginfo-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: fd9466b16ec780f615bd47adc19e16cefc5b2172dbcd5b1bbdc05b7a6478e48c pacemaker-libs-devel-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: b5b4ee039626917a79a1634b7ae99d640ef21782fb55ee24832d3027801943d9 pacemaker-remote-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: 203d7dd41d8fe323d81f4ae2436eeb72796490d8598b540ef8ab42f568325ace pacemaker-remote-debuginfo-3.0.0-5.3.el10_0.x86_64.rpm SHA-256: a4f906349927e2eb0075760049008ed759faf13738aef2e849d442f214715d5c python3-pacemaker-3.0.0-5.3.el10_