- Issued:
- 2026-09-21
- Updated:
- 2026-09-21
RHSA-2026:69278 - Security Advisory
Synopsis
Important: corosync security update
Type/Severity
Security Advisory: Important
Red Hat Lightspeed patch analysis
Identify and remediate systems affected by this advisory.
Topic
An update for corosync 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 corosync packages provide the Corosync Cluster Engine and C APIs for Red Hat Enterprise Linux cluster software.
Security Fix(es):
- corosync: corosync: heap-based buffer overflow in totempg assembly buffer during fragmented message reassembly (CVE-2026-81665)
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 8.8 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 - 2524910 - CVE-2026-81665 corosync: corosync: heap-based buffer overflow in totempg assembly buffer during fragmented message reassembly
CVEs
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 | |
|---|---|
| corosync-3.1.7-1.el8_8.2.src.rpm | SHA-256: 8dc4d2da4933322de864330142f11ee8f638ad3b45027d40839bca8539f7883c |
| x86_64 | |
| corosync-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 8334f523887e64cb664182058aaf630843a8dde688c9cd3ad5dba1567fe83c0f |
| corosync-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 7882eb9de4a5b5016c63d283f5c23ae017ec723e4e6642b8f41b0b42c0ae218e |
| corosync-debugsource-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 910e28f8406d2fdbd65385cb42c610aedf5a3268aea9bb63efcbe58bee43a0c7 |
| corosync-debugsource-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 91f53d7f41acbd9a645159c70ca7e12d3ef41a4e3bdd957b829c906fb287e72a |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 1cf107dee9719bd8b9ccf7f1a2f1611b21c6950750cbaa0f5c3fada08776aad2 |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 30ff0a36d00947b1ee8adb65928f856478715bf3f39cf938907cd58c3c24ea19 |
| corosynclib-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 6fa472be76c673d30bfc3cd5029ab94f9b9f33be42f0b0d80d6990683acd1ca1 |
| corosynclib-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: fa8239fa4953e7ec8d23a5b28c27204a93b5a246df032d635b378fe31df919a8 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: e640dabf0affbe78f242fa8e254a0c4eb973ec343337f5a51c13609589a5ed72 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: ee65552afec30c5437da3a9835af3f0d40fc632293d3b38463aa6b90607fbef3 |
| spausedd-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 4cdc0edb84fee8e496ab129f45a9ed2e15ecc06a570a4b1549a0b1f03aa9ba91 |
| spausedd-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: dfcf71905c7013cf411328f9ad771df93bd43b4a1cc4d4c16133c1d68400ba54 |
Red Hat Enterprise Linux Server - TUS 8.8
| SRPM | |
|---|---|
| corosync-3.1.7-1.el8_8.2.src.rpm | SHA-256: 8dc4d2da4933322de864330142f11ee8f638ad3b45027d40839bca8539f7883c |
| x86_64 | |
| corosync-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 8334f523887e64cb664182058aaf630843a8dde688c9cd3ad5dba1567fe83c0f |
| corosync-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 7882eb9de4a5b5016c63d283f5c23ae017ec723e4e6642b8f41b0b42c0ae218e |
| corosync-debugsource-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 910e28f8406d2fdbd65385cb42c610aedf5a3268aea9bb63efcbe58bee43a0c7 |
| corosync-debugsource-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 91f53d7f41acbd9a645159c70ca7e12d3ef41a4e3bdd957b829c906fb287e72a |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 1cf107dee9719bd8b9ccf7f1a2f1611b21c6950750cbaa0f5c3fada08776aad2 |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 30ff0a36d00947b1ee8adb65928f856478715bf3f39cf938907cd58c3c24ea19 |
| corosynclib-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 6fa472be76c673d30bfc3cd5029ab94f9b9f33be42f0b0d80d6990683acd1ca1 |
| corosynclib-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: fa8239fa4953e7ec8d23a5b28c27204a93b5a246df032d635b378fe31df919a8 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: e640dabf0affbe78f242fa8e254a0c4eb973ec343337f5a51c13609589a5ed72 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: ee65552afec30c5437da3a9835af3f0d40fc632293d3b38463aa6b90607fbef3 |
| spausedd-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 4cdc0edb84fee8e496ab129f45a9ed2e15ecc06a570a4b1549a0b1f03aa9ba91 |
| spausedd-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: dfcf71905c7013cf411328f9ad771df93bd43b4a1cc4d4c16133c1d68400ba54 |
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8
| SRPM | |
|---|---|
| corosync-3.1.7-1.el8_8.2.src.rpm | SHA-256: 8dc4d2da4933322de864330142f11ee8f638ad3b45027d40839bca8539f7883c |
| ppc64le | |
| corosync-debuginfo-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: 2874e26de47c9f6a1f218751c02feefea5cda36c2948daea3b6ae52bfb9feb53 |
| corosync-debugsource-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: 965e326f47638100ba69953fd9939c2160c3ccf33ea21b87cc1ffa47c1b52086 |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: 54a425d44f94fe39ec52ef37b66513654dc9c9ae8d3c25a98fe0244c0f321bf9 |
| corosynclib-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: a2408da3e10babe75d5b83b34b36f078cc8b87cbcf31d17fedf72c9c6f8a9506 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: efde50bc5d81116cd007d846e0c6b4a7a1b912c7571249f244a09814ada5f05d |
| spausedd-debuginfo-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: 06441f94dc69157d3392b12662bb819e204123a1b9a223102de43fe8a76a5617 |
Red Hat Enterprise Linux High Availability for Power LE - Update Services for SAP Solutions 8.8
| SRPM | |
|---|---|
| ppc64le | |
| corosync-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: 74cfbddc28b25b64f5ef898af6a9f4cd6b282469b35274e53a32e0204433830e |
| corosync-debuginfo-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: 2874e26de47c9f6a1f218751c02feefea5cda36c2948daea3b6ae52bfb9feb53 |
| corosync-debugsource-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: 965e326f47638100ba69953fd9939c2160c3ccf33ea21b87cc1ffa47c1b52086 |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: 54a425d44f94fe39ec52ef37b66513654dc9c9ae8d3c25a98fe0244c0f321bf9 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: efde50bc5d81116cd007d846e0c6b4a7a1b912c7571249f244a09814ada5f05d |
| corosynclib-devel-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: 9cc5a6f625d48c960acfa7f2b93fd5d71c5fe2878d99fa45c5d52538a38211de |
| spausedd-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: c134c4f5e89ead4a6e8c078bc461b05fda0ddfd0c34e6fba70749ddac7f1c437 |
| spausedd-debuginfo-3.1.7-1.el8_8.2.ppc64le.rpm | SHA-256: 06441f94dc69157d3392b12662bb819e204123a1b9a223102de43fe8a76a5617 |
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8
| SRPM | |
|---|---|
| corosync-3.1.7-1.el8_8.2.src.rpm | SHA-256: 8dc4d2da4933322de864330142f11ee8f638ad3b45027d40839bca8539f7883c |
| x86_64 | |
| corosync-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 8334f523887e64cb664182058aaf630843a8dde688c9cd3ad5dba1567fe83c0f |
| corosync-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 7882eb9de4a5b5016c63d283f5c23ae017ec723e4e6642b8f41b0b42c0ae218e |
| corosync-debugsource-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 910e28f8406d2fdbd65385cb42c610aedf5a3268aea9bb63efcbe58bee43a0c7 |
| corosync-debugsource-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 91f53d7f41acbd9a645159c70ca7e12d3ef41a4e3bdd957b829c906fb287e72a |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 1cf107dee9719bd8b9ccf7f1a2f1611b21c6950750cbaa0f5c3fada08776aad2 |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 30ff0a36d00947b1ee8adb65928f856478715bf3f39cf938907cd58c3c24ea19 |
| corosynclib-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 6fa472be76c673d30bfc3cd5029ab94f9b9f33be42f0b0d80d6990683acd1ca1 |
| corosynclib-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: fa8239fa4953e7ec8d23a5b28c27204a93b5a246df032d635b378fe31df919a8 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: e640dabf0affbe78f242fa8e254a0c4eb973ec343337f5a51c13609589a5ed72 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: ee65552afec30c5437da3a9835af3f0d40fc632293d3b38463aa6b90607fbef3 |
| spausedd-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 4cdc0edb84fee8e496ab129f45a9ed2e15ecc06a570a4b1549a0b1f03aa9ba91 |
| spausedd-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: dfcf71905c7013cf411328f9ad771df93bd43b4a1cc4d4c16133c1d68400ba54 |
Red Hat Enterprise Linux High Availability for x86_64 - Update Services for SAP Solutions 8.8
| SRPM | |
|---|---|
| x86_64 | |
| corosync-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 54d1c3be6cd84a914ad5298a554b288e6ea9d9ec1f4a11bf274624b978585f79 |
| corosync-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 8334f523887e64cb664182058aaf630843a8dde688c9cd3ad5dba1567fe83c0f |
| corosync-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 7882eb9de4a5b5016c63d283f5c23ae017ec723e4e6642b8f41b0b42c0ae218e |
| corosync-debugsource-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 910e28f8406d2fdbd65385cb42c610aedf5a3268aea9bb63efcbe58bee43a0c7 |
| corosync-debugsource-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 91f53d7f41acbd9a645159c70ca7e12d3ef41a4e3bdd957b829c906fb287e72a |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 1cf107dee9719bd8b9ccf7f1a2f1611b21c6950750cbaa0f5c3fada08776aad2 |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 30ff0a36d00947b1ee8adb65928f856478715bf3f39cf938907cd58c3c24ea19 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: e640dabf0affbe78f242fa8e254a0c4eb973ec343337f5a51c13609589a5ed72 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: ee65552afec30c5437da3a9835af3f0d40fc632293d3b38463aa6b90607fbef3 |
| corosynclib-devel-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 6d86d63e37b2eb3d44e758789a2b7b24749127d57bf89566a19bf123bfba031d |
| corosynclib-devel-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 005844ce327862087695d89f8fd493206a0587938ef0c58aef9d22b8b57180d7 |
| spausedd-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: bcaa8fd1695ea2e3908d598642afb13a7ec5d3b0c9e55a97b002ac0b98c36d9d |
| spausedd-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 4cdc0edb84fee8e496ab129f45a9ed2e15ecc06a570a4b1549a0b1f03aa9ba91 |
| spausedd-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: dfcf71905c7013cf411328f9ad771df93bd43b4a1cc4d4c16133c1d68400ba54 |
Red Hat Enterprise Linux High Availability for x86_64 - Telecommunications Update Service 8.8
| SRPM | |
|---|---|
| x86_64 | |
| corosync-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 54d1c3be6cd84a914ad5298a554b288e6ea9d9ec1f4a11bf274624b978585f79 |
| corosync-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 8334f523887e64cb664182058aaf630843a8dde688c9cd3ad5dba1567fe83c0f |
| corosync-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 7882eb9de4a5b5016c63d283f5c23ae017ec723e4e6642b8f41b0b42c0ae218e |
| corosync-debugsource-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 910e28f8406d2fdbd65385cb42c610aedf5a3268aea9bb63efcbe58bee43a0c7 |
| corosync-debugsource-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 91f53d7f41acbd9a645159c70ca7e12d3ef41a4e3bdd957b829c906fb287e72a |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 1cf107dee9719bd8b9ccf7f1a2f1611b21c6950750cbaa0f5c3fada08776aad2 |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 30ff0a36d00947b1ee8adb65928f856478715bf3f39cf938907cd58c3c24ea19 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: e640dabf0affbe78f242fa8e254a0c4eb973ec343337f5a51c13609589a5ed72 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: ee65552afec30c5437da3a9835af3f0d40fc632293d3b38463aa6b90607fbef3 |
| corosynclib-devel-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 6d86d63e37b2eb3d44e758789a2b7b24749127d57bf89566a19bf123bfba031d |
| corosynclib-devel-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 005844ce327862087695d89f8fd493206a0587938ef0c58aef9d22b8b57180d7 |
| spausedd-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: bcaa8fd1695ea2e3908d598642afb13a7ec5d3b0c9e55a97b002ac0b98c36d9d |
| spausedd-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 4cdc0edb84fee8e496ab129f45a9ed2e15ecc06a570a4b1549a0b1f03aa9ba91 |
| spausedd-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: dfcf71905c7013cf411328f9ad771df93bd43b4a1cc4d4c16133c1d68400ba54 |
Red Hat Enterprise Linux High Availability for x86_64 - Extended Life Cycle Long Life 8.8
| SRPM | |
|---|---|
| x86_64 | |
| corosync-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 54d1c3be6cd84a914ad5298a554b288e6ea9d9ec1f4a11bf274624b978585f79 |
| corosync-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 8334f523887e64cb664182058aaf630843a8dde688c9cd3ad5dba1567fe83c0f |
| corosync-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 7882eb9de4a5b5016c63d283f5c23ae017ec723e4e6642b8f41b0b42c0ae218e |
| corosync-debugsource-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 910e28f8406d2fdbd65385cb42c610aedf5a3268aea9bb63efcbe58bee43a0c7 |
| corosync-debugsource-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 91f53d7f41acbd9a645159c70ca7e12d3ef41a4e3bdd957b829c906fb287e72a |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 1cf107dee9719bd8b9ccf7f1a2f1611b21c6950750cbaa0f5c3fada08776aad2 |
| corosync-vqsim-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 30ff0a36d00947b1ee8adb65928f856478715bf3f39cf938907cd58c3c24ea19 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: e640dabf0affbe78f242fa8e254a0c4eb973ec343337f5a51c13609589a5ed72 |
| corosynclib-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: ee65552afec30c5437da3a9835af3f0d40fc632293d3b38463aa6b90607fbef3 |
| corosynclib-devel-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 6d86d63e37b2eb3d44e758789a2b7b24749127d57bf89566a19bf123bfba031d |
| corosynclib-devel-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: 005844ce327862087695d89f8fd493206a0587938ef0c58aef9d22b8b57180d7 |
| spausedd-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: bcaa8fd1695ea2e3908d598642afb13a7ec5d3b0c9e55a97b002ac0b98c36d9d |
| spausedd-debuginfo-3.1.7-1.el8_8.2.i686.rpm | SHA-256: 4cdc0edb84fee8e496ab129f45a9ed2e15ecc06a570a4b1549a0b1f03aa9ba91 |
| spausedd-debuginfo-3.1.7-1.el8_8.2.x86_64.rpm | SHA-256: dfcf71905c7013cf411328f9ad771df93bd43b4a1cc4d4c16133c1d68400ba54 |
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