Red Hat Product Errata RHSA-2026:58546 - Security Advisory Issued: 2026-08-24 Updated: 2026-08-24 RHSA-2026:58546 - Security Advisory Overview Updated Packages Synopsis Important: fence-agents 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 fence-agents 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 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 fence-agents packages provide a collection of scripts for handling remote power management for cluster devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster. Security Fix(es): pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values (CVE-2026-59886) 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 High Availability 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 High Availability 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 High Availability for ARM 64 - 4 years of updates 9.2 aarch64 Red Hat Enterprise Linux High Availability for IBM z Systems - 4 years of updates 9.2 s390x Red Hat Enterprise Linux Resilient Storage for x86_64 - 4 years of updates 9.2 x86_64 Red Hat Enterprise Linux Resilient Storage for Power, little endian - 4 years of updates 9.2 ppc64le Red Hat Enterprise Linux Resilient Storage 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 High Availability for x86_64 - Advanced Update Support 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 Red Hat Enterprise Linux High Availability for ARM 64 - Extended Life Cycle 9.2 aarch64 Red Hat Enterprise Linux High Availability for Power, little endian - Extended Life Cycle 9.2 ppc64le Red Hat Enterprise Linux High Availability for IBM z Systems - Extended Life Cycle 9.2 s390x Red Hat Enterprise Linux High Availability for x86_64 - Extended Life Cycle 9.2 x86_64 Red Hat Enterprise Linux Resilient Storage for Power, little endian - Extended Life Cycle 9.2 ppc64le Red Hat Enterprise Linux Resilient Storage for IBM z Systems - Extended Life Cycle 9.2 s390x Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Life Cycle 9.2 x86_64 Fixes BZ - 2500041 - CVE-2026-59886 pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values CVEs CVE-2026-59886 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 Server - AUS 9.2 SRPM fence-agents-4.10.0-43.el9_2.25.src.rpm SHA-256: ba59580d8ba7c04f4f75d9b69ca116f21510edf03cb483221a27874b41113924 x86_64 fence-agents-common-4.10.0-43.el9_2.25.noarch.rpm SHA-256: bb85764aafe0f19c66157d402636306c432afe35f473a31559835812e3034820 fence-agents-compute-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: 9fcadcc6e1c93c076209104779f4b9d8ed6e56dfd2bfdbc2866cad1ca099fa58 fence-agents-debuginfo-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: a6798858f0791e88d8cde64ca05e120d1b918ca6f7012b24e18b516aaf06542d fence-agents-debugsource-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: a732e09c74dc5e4a1a5306809a15ed09d0dcd6cdea86862f3cb4157efa3a9777 fence-agents-ibm-powervs-4.10.0-43.el9_2.25.noarch.rpm SHA-256: 783ed141540a830513b0fca233ade12811da1f4b22f7ded65a10e4dd344d296e fence-agents-ibm-vpc-4.10.0-43.el9_2.25.noarch.rpm SHA-256: d1030fc684a55fe33229f73e8b5e9c63319a4ff76372675dfd1542052f190c8d fence-agents-kdump-debuginfo-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: 429db15a9907dd7e6ce3e8b502c262f06416313f71c5bf9a743f8f98ac2839e2 fence-agents-kubevirt-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: e4eca1ef6030db81e956c8b414f042266fc75cc18714e52e3300e6cad0242cbd fence-agents-kubevirt-debuginfo-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: aa86c51a9d3f59f071daf6c6de3c425a0223a1b6ca11dc4cac0809b7c8a5fb4d fence-agents-virsh-4.10.0-43.el9_2.25.noarch.rpm SHA-256: b7425d4b33e6db507aa0059b4c2a71b8421b92c8a7307a9c93241b5a3ec4d4a6 fence-virt-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: b8ddaa5ab20ae27dee484246a4db0b454a36f2432a5eadde191082d8a1abd0d7 fence-virt-debuginfo-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: dbe9f6997ca6c142c03b409c44c96879065777cdaa073fe511b0bf19027e335d fence-virtd-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: f79b4aeaa347aed4b177960ec15d9a6b0a6c352e93299d47eee18d970a7e961b fence-virtd-cpg-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: 0166925dbc4bd7a5330ce9f0742581dad9040d13060f455cce74b9cbddb91e92 fence-virtd-cpg-debuginfo-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: fbfc2f72a4f5e044959848c9e210dd9fc1db6cd346f28dbf5865961035dde7d8 fence-virtd-debuginfo-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: d4c76692c75f923dfddbd0ccff8a6ae00623141a5377cd37912ff131686a9236 fence-virtd-libvirt-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: 8a27f70683a35ec849adb32b80a0a69276c82b5f62ea6d8170d19d376fee1e7a fence-virtd-libvirt-debuginfo-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: 10f8202f691f8016cac583902d4346d6032e08d6a724a099b19da31e7d4d6810 fence-virtd-multicast-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: 5cc914b21c9d2a3cc520455b2ff7cc6028f078358281007e3d11dd28fdbbb7bc fence-virtd-multicast-debuginfo-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: 9b33d6a556344713fb81595ac426ed7d2201bc8602458fcf16f5065cacf547f4 fence-virtd-serial-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: 884b7d759f04cfc51aef9cb24151c16e2e1625f8b280e3602ba069504a306d63 fence-virtd-serial-debuginfo-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: ead5beb34d2a03dae57984dfe42274bf25cf2842847bf07ec83c7aa800feb234 fence-virtd-tcp-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: d02333f97d62f731917c9ed8e0314eb7748edc3b1992689d467281d8c4ee961e fence-virtd-tcp-debuginfo-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: c2b1499a10a4115f26d23290dcd46af3b06c1ab75cf6aa3f621c4ffd0babcf0d ha-cloud-support-debuginfo-4.10.0-43.el9_2.25.x86_64.rpm SHA-256: 98f9d15d4e0647460f603df7ef03c54a781716a55709f72d26ee4bfb855e6440 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.2 SRPM fence-agents-4.10.0-43.el9_2.25.src.rpm SHA-256: ba59580d8ba7c04f4f75d9b69ca116f21510edf03cb483221a27874b41113924 ppc64le fence-agents-common-4.10.0-43.el9_2.25.noarch.rpm SHA-256: bb85764aafe0f19c66157d402636306c432afe35f473a31559835812e3034820 fence-agents-compute-4.10.0-43.el9_2.25.ppc64le.rpm SHA-256: 0a8f7d88bfe9d542d59531fcc172d0164f469dc163f4259417a2a024b50e6d5a fence-agents-debuginfo-4.10.0-43.el9_2.25.ppc64le.rpm SHA-256: ea8394b27fda10ee85b14104dafce2d97aa5baef9f207838dd3620d158386234 fence-agents-debugsource-4.10.0-43.el9_2.25.ppc64le.rpm SHA-256: 355d3f11a3dca763cdf251809e893e705c7f32897c475e003ef99e622e6fc56a fence-agents-ibm-powervs-4.10.0-43.el9_2.25.noarch.rpm SHA-256: 783ed141540a830513b0fca233ade12811da1f4b22f7ded65a10e4dd344d296e fence-agents-ibm-vpc-4.10.0-43.el9_2.25.noarch.rpm SHA-256: d1030fc684a55fe33229f73e8b5e9c63319a4ff76372675dfd1542052f190c8d fence-agents-kdump-debuginfo-4.10.0-43.el9_2.25.ppc64le.rpm SHA-256: d0f0e664c9de8d99d0306a4a90e39e34751ac6c57ee237f82b6241309409800e fence-agents-kubevirt-4.10.0-43.el9_2.25.ppc64le.rpm SHA-256: 901f33eb1c075805b4ec27283ae1bdf11becd949007104d99906aab66865bd44 fence-agents-kubevirt-debuginfo-4.10.0-43.el9_2.25.ppc64le.rpm SHA-256: 23868221a794a89ff358c728f05430d7c7f67d08a33a02cb260519dcd5fab34a fence-agents-virsh-4.10.0-43.el9_2.25.noarch.rpm SHA-256: b7425d4b33e6db507aa0059b4c2a71b8421b92c8a7307a9c93241b5a3ec4d4a6 Red Hat Enterprise Linux High Availability for Power LE - Update Services for SAP Solutions 9.2 SRPM ppc64le fence-agents-all-4.10.0-43.el9_2.25.ppc64le.rpm SHA-256: bbec8814d8135d52f45cc62bf2179428d1c23a84a0f934f097fbabea6a77fd42 fence-agents-amt-ws-4.10.0-43.el9_2.25.noarch.rpm SHA-256: b1c44fee7a0efd9677abbf70b62435780f4e33e86589f08a1aa97998037b50ea fence-agents-apc-4.10.0-43.el9_2.25.noarch.rpm SHA-256: 5e384092dddaba402e572edaf29754383d80d0cb112d2747595b79c6454b1c9d fence-agents-apc-snmp-4.10.0-43.el9_2.25.noarch.rpm SHA-256: 7f05f62e42bffb589ba6c120062842b7e45b5c7ed83845cd974cf00113c4006a fence-agents-bladecenter-4.10.0-43.el9_2.25.noarch.rpm SHA-256: 36afb775283501532233b8d1b06d42908d08c8f288770a7b6ed4c04ed13d61f2 fence-agents-brocade-4.10.0-43.el9_2.25.noarch.rpm SHA-256: 7f333242fd2aeb33f71c7f249bb1712085457a8d94790c911b5759542c9abaa9 fence-agents-cisco-mds-4.10.0-43.el9_2.25.noarch.rpm SHA-256: d6ccd08323a2a8d2736e43564048ecde3282292714248f322a428af574009ec1 fence-agents-cisco-ucs-4.10.0-43.el9_2.25.noarch.rpm SHA-256: 34f674901884cf025aa55e0cc1eb060202fc9867136da5761bad493a66326bb3 fence-agents-debuginfo-4.10.0-43.el9_2.25.ppc64le.rpm SHA-256: ea8394b27fda10ee85b14104dafce2d97aa5baef9f207838dd3620d158386234 fence-agents-debugsource-4.10.0-43.el9_2.25.ppc64le.rpm SHA-256: 355d3f11a3dca763cdf251809e893e705c7f32897c475e003ef99e62