- Issued:
- 2026-08-24
- Updated:
- 2026-08-24
RHSA-2026:58835 - Security Advisory
Synopsis
Important: fence-agents security update
Type/Severity
Security Advisory: Important
Red Hat Lightspeed patch analysis
Identify and remediate systems affected by this advisory.
Topic
An update for fence-agents is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On.
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:
Affected Products
- Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.6 x86_64
- Red Hat Enterprise Linux Server - AUS 8.6 x86_64
- Red Hat Enterprise Linux High Availability for x86_64 - Extended Life Cycle Long Life 8.6 x86_64
Fixes
- BZ - 2500041 - CVE-2026-59886 pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values
CVEs
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.6
| SRPM | |
|---|---|
| fence-agents-4.2.1-89.el8_6.26.src.rpm | SHA-256: b1d9634bf75d412b859b0c27721f17aaec13af92e9dd791e3473fafa50d99eaa |
| x86_64 | |
| fence-agents-aliyun-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: ad96d5342973330b661a4e09d54bdb1fe6ce03b1c5aaf6cb3f3229e00eeebd1e |
| fence-agents-all-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 373ba106e9d52d6a2025f5d60bf35e113b5bbdbcbf2f9f99c3bd31a051526863 |
| fence-agents-amt-ws-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 479c62222224f0c38633f78e64aa845fbe7eec17c8b8a911b312ee169188ceff |
| fence-agents-apc-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: b15552a0bc90cb1b79d15f1c8716a8b1294f0a110041b7299ab269064be8d1c9 |
| fence-agents-apc-snmp-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 53d0799c5f1bd6b71974ca87bfcd8b691b8f27dd9117edcddcd8a21c1b3ad04a |
| fence-agents-bladecenter-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 492f697d60cbb231fa70bb6e80eb52c409756285457cca382c4cce63721cd4d3 |
| fence-agents-brocade-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: de8357318b5d4b55b6fffc6a9e69b901be07bfb1291462abcb48232c067be13d |
| fence-agents-cisco-mds-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: f4ed7069b7b480e79bb870e6d000b8da279266e62262260016bf4b5806c76d3a |
| fence-agents-cisco-ucs-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: cc7f7b0b7039c49c98e6f94bd1821cc9e8ca3902d9a0fdce5caa7f91fee2c070 |
| fence-agents-common-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 756cc6442cebe71539bd0d4e766953769a1a1e5eeff2776785011b5a2e182d40 |
| fence-agents-compute-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 8733178a6024f8736d070ec51640baf202b2af2c6ddce2fe203b53960f6844bf |
| fence-agents-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: e3107db83f5a19dea733402b93522b084222b2a9bf402abc7b6fb7843662b1bd |
| fence-agents-debugsource-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 0f19a0273a1fbedef40184f8fa55c61a1a42924822e285722062e3a11259af46 |
| fence-agents-drac5-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 3975a74385ced89366265fe99df6db44a3fe5c6fcff98eec529af605d145d796 |
| fence-agents-eaton-snmp-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 078e873463b5d37023c1e33ef0edce64f54bc2084dd3913519efed2bb96ed2fe |
| fence-agents-emerson-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: bae4fca07d69b6f7f6b184afc8b751e8d4b7d62fb57dc770a1effb37fdcf35a9 |
| fence-agents-eps-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 28406fa41fd4e2d132aeccbac431dfda97fb4108ee79907dd210d01ea176a7e5 |
| fence-agents-heuristics-ping-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 0b40390f940ef4850c97edd0f9150887db7846058d22d2f948f66783dad01459 |
| fence-agents-hpblade-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: fe96733a261742b5ed2dcff465061150677860e8f3c584209bd1b0585cbac309 |
| fence-agents-ibm-powervs-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: d6beb4333c1ed4f67937d7b3f8a510a7587575583c6702a9db490490b6f6f230 |
| fence-agents-ibm-vpc-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: d4fba7af43fef6e516adafa236f493b2cbbf9189f948a8fcb1b74c9a7cab737f |
| fence-agents-ibmblade-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: a604a9a69f88bead1c4a6da9a119a007a3521d4d370ca139822227ee7c656dd1 |
| fence-agents-ifmib-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 4ea5c0a7641fcce4ef7f88f6aa835951a36e5813d21f350d7ebe7ff4da8d49f7 |
| fence-agents-ilo-moonshot-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 32e9cc2709d0086882b3d018ea2d3249700390239c75506b317d8a2eb4ecac1a |
| fence-agents-ilo-mp-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: a3c29ada7362fddd7a09e9eef4512c321f1095677df9ab3c2ce0b50afebde0fe |
| fence-agents-ilo-ssh-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: fef25a2e217996013b1a98f34d82308c44579b2f232eb7fc7680242f050f8de8 |
| fence-agents-ilo2-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: dc671e47bd5c7976104367dd27e272244f7a0b32681831727ba650494244f182 |
| fence-agents-intelmodular-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: cdceec6b69c7c0d6b3c7d3415cbc543a1b114bf011f27d4222ac5e40802aa5e0 |
| fence-agents-ipdu-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: e3be4b7b873c52a247d836c5530a72ed5c07bf7aee63332c99fa80ac35491994 |
| fence-agents-ipmilan-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 859078dc3539c0d5c33bedeca3cc3e5d99bec8cf5341805d8c71ce9e2c192770 |
| fence-agents-kdump-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 50aafe7d6c8cc3f147f5ec29ad37199b44506a53deab4ea662380aa75a8fd37c |
| fence-agents-kdump-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 79088205077bc3c588efa9696fb84006ce00fea734202b4e84394ee67c1bde05 |
| fence-agents-kubevirt-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 10d33d940ca9400256077bac71cd123cc182c63139a770ebb8ecffada5d25744 |
| fence-agents-kubevirt-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 657794889652f71fd17afd467fd516cecc470c0ae0e729ee1e75681b9217f077 |
| fence-agents-lpar-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: ae6f4e6c12261df9fdb7aa16f6357b40e9de54df7426d787b2b147ba096dfd8e |
| fence-agents-mpath-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 7cb5d2e8784e72ee7bbdf747ea7a3f34773f3c976b2aeca5898fc8e0727fb8d7 |
| fence-agents-nutanix-ahv-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 28a8540373e4529d96a544b949093aceeb2caafbfe1ff0721e200541b7381bf5 |
| fence-agents-redfish-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: c686f59bf815fe95e9112c156fcccd63d09fc9f5cb6dd35f3a3ab3599e1107e2 |
| fence-agents-rhevm-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 2ced87ba7049a11650e7e407402e1ed20b51307a3aa8d1b8a034eb730181fee4 |
| fence-agents-rsa-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 3ca3bea994521fa28dba2029b5af3294b513f071de8c95fec176c85664d6513c |
| fence-agents-rsb-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: a1397f3c85f2fe7bb1df87e3f155ed29a4138059ffd5cfc06f46b08dd4476ec5 |
| fence-agents-sbd-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 40a60403bbb80970901a95c32e9e65f871a316eacea349e6762d53f4c87d2c31 |
| fence-agents-scsi-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 6f655d53ccde15f162cd3fa56384fb285e2199162065b4ae13aefe27e3cba291 |
| fence-agents-virsh-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: ac501894b0b650ab8acaea1de97189884e778ef2d8ce2e92786c56a5bf819b03 |
| fence-agents-vmware-rest-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 7b6c1f4f6cf1e782ac5f28f7c3bad6045649a1cfbc9f7b62ea1add479410a453 |
| fence-agents-vmware-soap-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: c4a022bdbd61f6f5f70005c4bd30c25d44e23b69671f2dbe9f5b98556cb6b6ac |
| fence-agents-wti-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: a8fcb03fe652abfeb92c8e525e63f5646e4f5137d2cc069f984f68ea8db0a7ed |
Red Hat Enterprise Linux Server - AUS 8.6
| SRPM | |
|---|---|
| fence-agents-4.2.1-89.el8_6.26.src.rpm | SHA-256: b1d9634bf75d412b859b0c27721f17aaec13af92e9dd791e3473fafa50d99eaa |
| x86_64 | |
| fence-agents-aliyun-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: ad96d5342973330b661a4e09d54bdb1fe6ce03b1c5aaf6cb3f3229e00eeebd1e |
| fence-agents-all-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 373ba106e9d52d6a2025f5d60bf35e113b5bbdbcbf2f9f99c3bd31a051526863 |
| fence-agents-amt-ws-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 479c62222224f0c38633f78e64aa845fbe7eec17c8b8a911b312ee169188ceff |
| fence-agents-apc-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: b15552a0bc90cb1b79d15f1c8716a8b1294f0a110041b7299ab269064be8d1c9 |
| fence-agents-apc-snmp-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 53d0799c5f1bd6b71974ca87bfcd8b691b8f27dd9117edcddcd8a21c1b3ad04a |
| fence-agents-bladecenter-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 492f697d60cbb231fa70bb6e80eb52c409756285457cca382c4cce63721cd4d3 |
| fence-agents-brocade-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: de8357318b5d4b55b6fffc6a9e69b901be07bfb1291462abcb48232c067be13d |
| fence-agents-cisco-mds-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: f4ed7069b7b480e79bb870e6d000b8da279266e62262260016bf4b5806c76d3a |
| fence-agents-cisco-ucs-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: cc7f7b0b7039c49c98e6f94bd1821cc9e8ca3902d9a0fdce5caa7f91fee2c070 |
| fence-agents-common-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 756cc6442cebe71539bd0d4e766953769a1a1e5eeff2776785011b5a2e182d40 |
| fence-agents-compute-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 8733178a6024f8736d070ec51640baf202b2af2c6ddce2fe203b53960f6844bf |
| fence-agents-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: e3107db83f5a19dea733402b93522b084222b2a9bf402abc7b6fb7843662b1bd |
| fence-agents-debugsource-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 0f19a0273a1fbedef40184f8fa55c61a1a42924822e285722062e3a11259af46 |
| fence-agents-drac5-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 3975a74385ced89366265fe99df6db44a3fe5c6fcff98eec529af605d145d796 |
| fence-agents-eaton-snmp-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 078e873463b5d37023c1e33ef0edce64f54bc2084dd3913519efed2bb96ed2fe |
| fence-agents-emerson-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: bae4fca07d69b6f7f6b184afc8b751e8d4b7d62fb57dc770a1effb37fdcf35a9 |
| fence-agents-eps-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 28406fa41fd4e2d132aeccbac431dfda97fb4108ee79907dd210d01ea176a7e5 |
| fence-agents-heuristics-ping-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 0b40390f940ef4850c97edd0f9150887db7846058d22d2f948f66783dad01459 |
| fence-agents-hpblade-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: fe96733a261742b5ed2dcff465061150677860e8f3c584209bd1b0585cbac309 |
| fence-agents-ibm-powervs-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: d6beb4333c1ed4f67937d7b3f8a510a7587575583c6702a9db490490b6f6f230 |
| fence-agents-ibm-vpc-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: d4fba7af43fef6e516adafa236f493b2cbbf9189f948a8fcb1b74c9a7cab737f |
| fence-agents-ibmblade-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: a604a9a69f88bead1c4a6da9a119a007a3521d4d370ca139822227ee7c656dd1 |
| fence-agents-ifmib-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 4ea5c0a7641fcce4ef7f88f6aa835951a36e5813d21f350d7ebe7ff4da8d49f7 |
| fence-agents-ilo-moonshot-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 32e9cc2709d0086882b3d018ea2d3249700390239c75506b317d8a2eb4ecac1a |
| fence-agents-ilo-mp-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: a3c29ada7362fddd7a09e9eef4512c321f1095677df9ab3c2ce0b50afebde0fe |
| fence-agents-ilo-ssh-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: fef25a2e217996013b1a98f34d82308c44579b2f232eb7fc7680242f050f8de8 |
| fence-agents-ilo2-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: dc671e47bd5c7976104367dd27e272244f7a0b32681831727ba650494244f182 |
| fence-agents-intelmodular-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: cdceec6b69c7c0d6b3c7d3415cbc543a1b114bf011f27d4222ac5e40802aa5e0 |
| fence-agents-ipdu-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: e3be4b7b873c52a247d836c5530a72ed5c07bf7aee63332c99fa80ac35491994 |
| fence-agents-ipmilan-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 859078dc3539c0d5c33bedeca3cc3e5d99bec8cf5341805d8c71ce9e2c192770 |
| fence-agents-kdump-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 50aafe7d6c8cc3f147f5ec29ad37199b44506a53deab4ea662380aa75a8fd37c |
| fence-agents-kdump-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 79088205077bc3c588efa9696fb84006ce00fea734202b4e84394ee67c1bde05 |
| fence-agents-kubevirt-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 10d33d940ca9400256077bac71cd123cc182c63139a770ebb8ecffada5d25744 |
| fence-agents-kubevirt-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 657794889652f71fd17afd467fd516cecc470c0ae0e729ee1e75681b9217f077 |
| fence-agents-lpar-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: ae6f4e6c12261df9fdb7aa16f6357b40e9de54df7426d787b2b147ba096dfd8e |
| fence-agents-mpath-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 7cb5d2e8784e72ee7bbdf747ea7a3f34773f3c976b2aeca5898fc8e0727fb8d7 |
| fence-agents-nutanix-ahv-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 28a8540373e4529d96a544b949093aceeb2caafbfe1ff0721e200541b7381bf5 |
| fence-agents-redfish-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: c686f59bf815fe95e9112c156fcccd63d09fc9f5cb6dd35f3a3ab3599e1107e2 |
| fence-agents-rhevm-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 2ced87ba7049a11650e7e407402e1ed20b51307a3aa8d1b8a034eb730181fee4 |
| fence-agents-rsa-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 3ca3bea994521fa28dba2029b5af3294b513f071de8c95fec176c85664d6513c |
| fence-agents-rsb-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: a1397f3c85f2fe7bb1df87e3f155ed29a4138059ffd5cfc06f46b08dd4476ec5 |
| fence-agents-sbd-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 40a60403bbb80970901a95c32e9e65f871a316eacea349e6762d53f4c87d2c31 |
| fence-agents-scsi-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 6f655d53ccde15f162cd3fa56384fb285e2199162065b4ae13aefe27e3cba291 |
| fence-agents-virsh-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: ac501894b0b650ab8acaea1de97189884e778ef2d8ce2e92786c56a5bf819b03 |
| fence-agents-vmware-rest-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 7b6c1f4f6cf1e782ac5f28f7c3bad6045649a1cfbc9f7b62ea1add479410a453 |
| fence-agents-vmware-soap-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: c4a022bdbd61f6f5f70005c4bd30c25d44e23b69671f2dbe9f5b98556cb6b6ac |
| fence-agents-wti-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: a8fcb03fe652abfeb92c8e525e63f5646e4f5137d2cc069f984f68ea8db0a7ed |
Red Hat Enterprise Linux High Availability for x86_64 - Extended Life Cycle Long Life 8.6
| SRPM | |
|---|---|
| x86_64 | |
| fence-agents-aliyun-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 325a84850917ca9aa145e81edcb471446a27688b9d122cf3fa7c74cf76d84bee |
| fence-agents-aliyun-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: ad96d5342973330b661a4e09d54bdb1fe6ce03b1c5aaf6cb3f3229e00eeebd1e |
| fence-agents-aws-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 079e92c84afbcc5596496c97580ac05ba7ef7f55b85fcf36c537ed5f96a13330 |
| fence-agents-azure-arm-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 198dbb3a78830de5a517635b882cc70388f6186c84540a1d17bd464e3d125749 |
| fence-agents-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: e3107db83f5a19dea733402b93522b084222b2a9bf402abc7b6fb7843662b1bd |
| fence-agents-debugsource-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 0f19a0273a1fbedef40184f8fa55c61a1a42924822e285722062e3a11259af46 |
| fence-agents-gce-4.2.1-89.el8_6.26.noarch.rpm | SHA-256: 93c46b87cdbc752dc9ff08f7d2967ab89d680cdfaf312c3ec281c3f72f7b73e7 |
| fence-agents-kdump-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 79088205077bc3c588efa9696fb84006ce00fea734202b4e84394ee67c1bde05 |
| fence-agents-kubevirt-debuginfo-4.2.1-89.el8_6.26.x86_64.rpm | SHA-256: 657794889652f71fd17afd467fd516cecc470c0ae0e729ee1e75681b9217f077 |
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/