CVE-2026-81665

A heap-based buffer overflow was found in Corosyncs Totem Process Gro...

Astra Linux – Vulnerability in Corosync

A flaw was discovered in Corosync. There is an integer overflow vulnerability in Corosync’s join message sanity validation mechanism, which allows a remote, unauthenticated attacker to send crafted User Datagram Protocol UDP packets. This can cause the service to crash, resulting in a denial of...

Astra Linux – Vulnerability in Corosync

Corosync versions up to 3.1.9 suffer from a stack-based buffer overflow in the orftokenendianconvert function, in the exec/totemsrp.c file. This vulnerability exists when encryption is disabled or if the attacker knows the encryption key. The issue is caused by a large UDP packet...

Rocky Linux 10.1 [CIQ] Security Update: corosync-debuginfo / corosync-debugsource / corosync-vqsim / etc Multiple Vulnerabilities (crlsa-2026_13644)

The Rocky Linux 10.1 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202613644 advisory. corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet CVE-2026-35091 corosync: Corosync: Denial of Service via intege...

AlmaLinux 9.6 [TuxCare] Security Update: corosync / corosync-vqsim / corosynclib / corosynclib-devel Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1777742234)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1777742234 advisory. - A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync...

Rocky Linux 10.2 [CIQ] Security Update: corosync-debuginfo / corosync-debugsource / corosync-vqsim / etc Multiple Vulnerabilities (crlsa-2026_19043)

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202619043 advisory. corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet CVE-2026-35091 corosync: Corosync: Denial of Service via intege...

Rocky Linux 10.2 [CIQ] Security Update: corosync-debuginfo / corosync-debugsource / corosync-vqsim / etc (crlsa-2026_67872)

The Rocky Linux 10.2 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-202667872 advisory. corosync: corosync: heap-based buffer overflow in totempg assembly buffer during fragmented message reassembly CVE-2026-81665 Tenable has extracted the precedin...

Rocky Linux 9 [CIQ] Security Update: corosync / corosync-debuginfo / corosync-debugsource / etc (crlsa-2026_67873)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-202667873 advisory. corosync: corosync: heap-based buffer overflow in totempg assembly buffer during fragmented message reassembly CVE-2026-81665 Tenable has extracted the preceding...

AlmaLinux 9.2 [TuxCare] Security Update: corosync / corosync-vqsim / corosynclib / corosynclib-devel (ALMALINUX9.2:CLSA-2026:1790352190)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1790352190 advisory. - A heap-based buffer overflow was found in Corosync's Totem Process Group totempg message reassembly. When processing fragmented multicast...

Rocky Linux 9 [CIQ] Security Update: corosync / corosync-debuginfo / corosync-debugsource / etc Multiple Vulnerabilities (crlsa-2026_19200)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202619200 advisory. corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet CVE-2026-35091 corosync: Corosync: Denial of Service via integer...

AlmaLinux 9.2 [TuxCare] Security Update: corosync / corosync-vqsim / corosynclib / corosynclib-devel Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1776435617)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1776435617 advisory. - A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync...

Rocky Linux 9 [CIQ] Security Update: corosync / corosync-debuginfo / corosync-debugsource / etc Multiple Vulnerabilities (crlsa-2026_13673)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202613673 advisory. corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet CVE-2026-35091 corosync: Corosync: Denial of Service via integer...

AlmaLinux 9.2 [TuxCare] Security Update: corosync / corosync-vqsim / corosynclib / corosynclib-devel (ALMALINUX9.2:CLSA-2025:1747251688)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1747251688 advisory. - Corosync through 3.1.9, if encryption is disabled or the attacker knows the encryption key, has a stack- based buffer overflow in...

Rocky Linux 9.6 [TuxCare] Security Update: corosync / corosync-vqsim / corosynclib / corosynclib-devel Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1777742234)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1777742234 advisory. - A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync...

Rocky Linux 10.0 [CIQ] Security Update: corosync-debuginfo / corosync-debugsource / corosync-vqsim / etc (crlsa-2025_7478)

The Rocky Linux 10.0 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-20257478 advisory. corosync: Stack buffer overflow from 'orftokenendianconvert' CVE-2025-30472 Tenable has extracted the preceding description block directly from the CIQ security...

Rocky Linux 9 [CIQ] Security Update: corosync / corosync-debuginfo / corosync-debugsource / etc (crlsa-2025_7201)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-20257201 advisory. corosync: Stack buffer overflow from 'orftokenendianconvert' CVE-2025-30472 Tenable has extracted the preceding description block directly from the CIQ security...

Rocky Linux 8 [CIQ] Security Update: corosync / corosync-debuginfo / corosync-debugsource / etc (crlsa-2026_69277)

The Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-202669277 advisory. corosync: corosync: heap-based buffer overflow in totempg assembly buffer during fragmented message reassembly CVE-2026-81665 Tenable has extracted the preceding...

Rocky Linux 8 [CIQ] Security Update: corosync / corosync-debuginfo / corosync-debugsource / etc Multiple Vulnerabilities (crlsa-2026_13657)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202613657 advisory. corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet CVE-2026-35091 corosync: Corosync: Denial of Service via integer...

AlmaLinux 10 : corosync (ALSA-2026:67872)

The remote AlmaLinux 10 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:67872 advisory. corosync: corosync: heap-based buffer overflow in totempg assembly buffer during fragmented message reassembly CVE-2026-81665 Tenable has extracted the preceding...

SUSE SLES12 Security Update : corosync (SUSE-SU-2026:4387-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:4387-1 advisory. This update for corosync fixes the following issue: - CVE-2026-81665: heap-based buffer overflow in totempg assembly buffer during fragmente...