Red Hat Product Errata RHSA-2026:59996 - Security Advisory Issued: 2026-08-26 Updated: 2026-08-26 RHSA-2026:59996 - Security Advisory Overview Updated Packages Synopsis Important: isns-utils 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 isns-utils is now available for Red Hat Enterprise Linux 9.4 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 iSNS package contains the daemon and tools to setup a iSNS server, and iSNS client tools. The Internet Storage Name Service (iSNS) protocol allows automated discovery, management and configuration of iSCSI and Fibre Channel devices (using iFCP gateways) on a TCP/IP network. Security Fix(es): open-isns: open-iscsi: Denial of Service via double-free in iSNS attribute decoder (CVE-2026-55995) 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 9.4 x86_64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.4 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.4 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.4 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.4 s390x Fixes BZ - 2508414 - CVE-2026-55995 open-isns: open-iscsi: Denial of Service via double-free in iSNS attribute decoder CVEs CVE-2026-55995 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 9.4 SRPM isns-utils-0.101-4.el9_4.1.src.rpm SHA-256: d10a3822efa2cd5cceccd1923d07a70cac224809bf8851773b602d1a4c3692ab x86_64 isns-utils-0.101-4.el9_4.1.x86_64.rpm SHA-256: 2935d6d3b155c7da73e917578cf0cb6556259c85014dcad09db89f54e854aa7b isns-utils-debuginfo-0.101-4.el9_4.1.i686.rpm SHA-256: 142e896af8d381da2f815d4b7ca3b6dabc8c231d947fdbadd25944d17aa6972a isns-utils-debuginfo-0.101-4.el9_4.1.x86_64.rpm SHA-256: a78c765b3beb1c3efec8dac4fa0efff90974b69b888016d0e894c3ab8a3df564 isns-utils-debugsource-0.101-4.el9_4.1.i686.rpm SHA-256: 0d07ad6f4106332003a87dacf734fbb7c7f158570236d0d65c23e9ff68a68821 isns-utils-debugsource-0.101-4.el9_4.1.x86_64.rpm SHA-256: 4ebf549a9cc18fae19a073d35a1eaea94ebdf3a7f6ca8c229ea20fa7674c4bb7 isns-utils-libs-0.101-4.el9_4.1.i686.rpm SHA-256: d481bfc1d59af74b54972e935d93104866a3f9e5d8b1bbca504023c467fc634e isns-utils-libs-0.101-4.el9_4.1.x86_64.rpm SHA-256: 4c15d13cb4f134488354c32719096473ffcbd1d951b243c7659a8678f608813e isns-utils-libs-debuginfo-0.101-4.el9_4.1.i686.rpm SHA-256: 818d097ec36544c5e91082cf4a80673b57ac2fc63709be10df6a42bb0d8950e8 isns-utils-libs-debuginfo-0.101-4.el9_4.1.x86_64.rpm SHA-256: 083dabeba746093459c459ab79b41a5dc9dbeaf5333a954c4c6558a08c0c9346 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 SRPM isns-utils-0.101-4.el9_4.1.src.rpm SHA-256: d10a3822efa2cd5cceccd1923d07a70cac224809bf8851773b602d1a4c3692ab ppc64le isns-utils-0.101-4.el9_4.1.ppc64le.rpm SHA-256: 751539ee38629ab7f5956712bb56acdf93e61253fa14c0c69411afe6b7cbe736 isns-utils-debuginfo-0.101-4.el9_4.1.ppc64le.rpm SHA-256: 5c10d28d5c4a0b567dadd032d7578987e8f0f8c79cbe87cb1798a4cf955e0eb2 isns-utils-debugsource-0.101-4.el9_4.1.ppc64le.rpm SHA-256: 1b1c39ee710f300d0086c5dd00bd4c1eec6e73418193d8b0adc78555be71fbf3 isns-utils-libs-0.101-4.el9_4.1.ppc64le.rpm SHA-256: f4d99f24d8c61eeb4ade28e202eaf739c456d4a3a6d27d642f15e60fce290944 isns-utils-libs-debuginfo-0.101-4.el9_4.1.ppc64le.rpm SHA-256: 3e95462d496bdb570a2405c54e8311ecef904ecffe235c389bf48a5f753f9c5e Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 SRPM isns-utils-0.101-4.el9_4.1.src.rpm SHA-256: d10a3822efa2cd5cceccd1923d07a70cac224809bf8851773b602d1a4c3692ab x86_64 isns-utils-0.101-4.el9_4.1.x86_64.rpm SHA-256: 2935d6d3b155c7da73e917578cf0cb6556259c85014dcad09db89f54e854aa7b isns-utils-debuginfo-0.101-4.el9_4.1.i686.rpm SHA-256: 142e896af8d381da2f815d4b7ca3b6dabc8c231d947fdbadd25944d17aa6972a isns-utils-debuginfo-0.101-4.el9_4.1.x86_64.rpm SHA-256: a78c765b3beb1c3efec8dac4fa0efff90974b69b888016d0e894c3ab8a3df564 isns-utils-debugsource-0.101-4.el9_4.1.i686.rpm SHA-256: 0d07ad6f4106332003a87dacf734fbb7c7f158570236d0d65c23e9ff68a68821 isns-utils-debugsource-0.101-4.el9_4.1.x86_64.rpm SHA-256: 4ebf549a9cc18fae19a073d35a1eaea94ebdf3a7f6ca8c229ea20fa7674c4bb7 isns-utils-libs-0.101-4.el9_4.1.i686.rpm SHA-256: d481bfc1d59af74b54972e935d93104866a3f9e5d8b1bbca504023c467fc634e isns-utils-libs-0.101-4.el9_4.1.x86_64.rpm SHA-256: 4c15d13cb4f134488354c32719096473ffcbd1d951b243c7659a8678f608813e isns-utils-libs-debuginfo-0.101-4.el9_4.1.i686.rpm SHA-256: 818d097ec36544c5e91082cf4a80673b57ac2fc63709be10df6a42bb0d8950e8 isns-utils-libs-debuginfo-0.101-4.el9_4.1.x86_64.rpm SHA-256: 083dabeba746093459c459ab79b41a5dc9dbeaf5333a954c4c6558a08c0c9346 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 SRPM isns-utils-0.101-4.el9_4.1.src.rpm SHA-256: d10a3822efa2cd5cceccd1923d07a70cac224809bf8851773b602d1a4c3692ab aarch64 isns-utils-0.101-4.el9_4.1.aarch64.rpm SHA-256: b999e2a07800f9ebb31a593aa1e72cb086b50d67aa1af8ae92f7d00f39739c8b isns-utils-debuginfo-0.101-4.el9_4.1.aarch64.rpm SHA-256: 1177fc95cb8270f76b92f0000b8d30b9a411cd247445e043e872199e79ff77c8 isns-utils-debugsource-0.101-4.el9_4.1.aarch64.rpm SHA-256: fb0089c05325e9eb44ce8e19f567af981d0c99e4f48641a2476182d2cca5b8c2 isns-utils-libs-0.101-4.el9_4.1.aarch64.rpm SHA-256: 4f5a0809fdf91167885b5a74ae69bea790c0d29b7eef29166f7785316e0548f8 isns-utils-libs-debuginfo-0.101-4.el9_4.1.aarch64.rpm SHA-256: befa8bbce57f8447dcd6306a1adb39b5f6f39099e0088983ce51211de367bdc8 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 SRPM isns-utils-0.101-4.el9_4.1.src.rpm SHA-256: d10a3822efa2cd5cceccd1923d07a70cac224809bf8851773b602d1a4c3692ab s390x isns-utils-0.101-4.el9_4.1.s390x.rpm SHA-256: 45bf265c4141fc3d818b6ca93dc7fa55d475ec689dd90a58315121b7538ab715 isns-utils-debuginfo-0.101-4.el9_4.1.s390x.rpm SHA-256: b1698edb5c4a0868a46cffdb3602f1cde087878179e02ec7fbded6fe1ec2bca2 isns-utils-debugsource-0.101-4.el9_4.1.s390x.rpm SHA-256: 3e52f9ba1a8a29e8fc5cec5b1696270eb3b27d7fbdd967c7e55b5441b2b03288 isns-utils-libs-0.101-4.el9_4.1.s390x.rpm SHA-256: dc0dd489f9c59146e2afc40b48b09e6d2ec7e68ff987fcf7a9f2be2fc60f897f isns-utils-libs-debuginfo-0.101-4.el9_4.1.s390x.rpm SHA-256: 7cc7d6d41827362d3c2aed87951ae225e5f44c7e0c41ed9c69cc4f9facd0b74c Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.4 SRPM isns-utils-0.101-4.el9_4.1.src.rpm SHA-256: d10a3822efa2cd5cceccd1923d07a70cac224809bf8851773b602d1a4c3692ab x86_64 isns-utils-0.101-4.el9_4.1.x86_64.rpm SHA-256: 2935d6d3b155c7da73e917578cf0cb6556259c85014dcad09db89f54e854aa7b isns-utils-debuginfo-0.101-4.el9_4.1.i686.rpm SHA-256: 142e896af8d381da2f815d4b7ca3b6dabc8c231d947fdbadd25944d17aa6972a isns-utils-debuginfo-0.101-4.el9_4.1.x86_64.rpm SHA-256: a78c765b3beb1c3efec8dac4fa0efff90974b69b888016d0e894c3ab8a3df564 isns-utils-debugsource-0.101-4.el9_4.1.i686.rpm SHA-256: 0d07ad6f4106332003a87dacf734fbb7c7f158570236d0d65c23e9ff68a68821 isns-utils-debugsource-0.101-4.el9_4.1.x86_64.rpm SHA-256: 4ebf549a9cc18fae19a073d35a1eaea94ebdf3a7f6ca8c229ea20fa7674c4bb7 isns-utils-libs-0.101-4.el9_4.1.i686.rpm SHA-256: d481bfc1d59af74b54972e935d93104866a3f9e5d8b1bbca504023c467fc634e isns-utils-libs-0.101-4.el9_4.1.x86_64.rpm SHA-256: 4c15d13cb4f134488354c32719096473ffcbd1d951b243c7659a8678f608813e isns-utils-libs-debuginfo-0.101-4.el9_4.1.i686.rpm SHA-256: 818d097ec36544c5e91082cf4a80673b57ac2fc63709be10df6a42bb0d8950e8 isns-utils-libs-debuginfo-0.101-4.el9_4.1.x86_64.rpm SHA-256: 083dabeba746093459c459ab79b41a5dc9dbeaf5333a954c4c6558a08c0c9346 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.4 SRPM isns-utils-0.101-4.el9_4.1.src.rpm SHA-256: d10a3822efa2cd5cceccd1923d07a70cac224809bf8851773b602d1a4c3692ab aarch64 isns-utils-0.101-4.el9_4.1.aarch64.rpm SHA-256: b999e2a07800f9ebb31a593aa1e72cb086b50d67aa1af8ae92f7d00f39739c8b isns-utils-debuginfo-0.101-4.el9_4.1.aarch64.rpm SHA-256: 1177fc95cb8270f76b92f0000b8d30b9a411cd247445e043e872199e79ff77c8 isns-utils-debugsource-0.101-4.el9_4.1.aarch64.rpm SHA-256: fb0089c05325e9eb44ce8e19f567af981d0c99e4f48641a2476182d2cca5b8c2 isns-utils-libs-0.101-4.el9_4.1.aarch64.rpm SHA-256: 4f5a0809fdf91167885b5a74ae69bea790c0d29b7eef29166f7785316e0548f8 isns-utils-libs-debuginfo-0.101-4.el9_4.1.aarch64.rpm SHA-256: befa8bbce57f8447dcd6306a1adb39b5f6f39099e0088983ce51211de367bdc8 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.4 SRPM isns-utils-0.101-4.el9_4.1.src.rpm SHA-256: d10a3822efa2cd5cceccd1923d07a70cac224809bf8851773b602d1a4c3692ab ppc64le isns-utils-0.101-4.el9_4.1.ppc64le.rpm SHA-256: 751539ee38629ab7f5956712bb56acdf93e61253fa14c0c69411afe6b7cbe736 isns-utils-debuginfo-0.101-4.el9_4.1.ppc64le.rpm SHA-256: 5c10d28d5c4a0b567dadd032d7578987e8f0f8c79cbe87cb1798a4cf955e0eb2 isns-utils-debugsource-0.101-4.el9_4.1.ppc64le.rpm SHA-256: 1b1c39ee710f300d0086c5