It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1560 advisory.

    A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value     vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User     Datagram Protocol (UDP) packet. This can lead to an out-of-bounds read, causing a denial of service (DoS)     and potentially disclosing limited memory contents. This vulnerability affects Corosync when running in     totemudp/totemudpu mode, which is the default configuration. (CVE-2026-35091)

    A flaw was found in Corosync. An integer overflow vulnerability in Corosync's join message sanity     validation allows a remote, unauthenticated attacker to send crafted User Datagram Protocol (UDP) packets.
    This can cause the service to crash, leading to a denial of service. This vulnerability specifically     affects Corosync deployments configured to use totemudp/totemudpu mode. (CVE-2026-35092)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:14212 advisory.

    The corosync packages provide the Corosync Cluster Engine and C APIs for Red Hat Enterprise Linux cluster     software.

    Security Fix(es):

    * corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet (CVE-2026-35091)

    * corosync: Corosync: Denial of Service via integer overflow in join message validation (CVE-2026-35092)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:14211 advisory.

    The corosync packages provide the Corosync Cluster Engine and C APIs for Red Hat Enterprise Linux cluster     software.

    Security Fix(es):

    * corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet (CVE-2026-35091)

    * corosync: Corosync: Denial of Service via integer overflow in join message validation (CVE-2026-35092)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:13673 advisory.

    * corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet (CVE-2026-35091)
      * corosync: Corosync: Denial of Service via integer overflow in join message validation (CVE-2026-35092)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:13644 advisory.

    The corosync packages provide the Corosync Cluster Engine and C APIs for Red Hat Enterprise Linux cluster     software.

    Security Fix(es):

    * corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet (CVE-2026-35091)

    * corosync: Corosync: Denial of Service via integer overflow in join message validation (CVE-2026-35092)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:13657 advisory.

    * corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet (CVE-2026-35091)
      * corosync: Corosync: Denial of Service via integer overflow in join message validation (CVE-2026-35092)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:20916 advisory.

    The corosync packages provide the Corosync Cluster Engine and C APIs for Red Hat Enterprise Linux cluster     software.

    Security Fix(es):

    * corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet (CVE-2026-35091)

    * corosync: Corosync: Denial of Service via integer overflow in join message validation (CVE-2026-35092)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名前	製品	ファミリー	公開日	更新日	深刻度
306238	Amazon Linux 2023 : corosync, corosync-vqsim, corosynclib (ALAS2023-2026-1560)	Nessus	Amazon Linux Local Security Checks	2026/4/13	2026/4/13	high
312651	RHEL 9 : corosync (RHSA-2026:14212)	Nessus	Red Hat Local Security Checks	2026/5/6	2026/8/6	high
313000	RHEL 9 : corosync (RHSA-2026:14211)	Nessus	Red Hat Local Security Checks	2026/5/7	2026/8/6	high
313284	AlmaLinux 9 : corosync (ALSA-2026:13673)	Nessus	Alma Linux Local Security Checks	2026/5/8	2026/5/8	high
312172	RHEL 10 : corosync (RHSA-2026:13644)	Nessus	Red Hat Local Security Checks	2026/5/5	2026/8/6	high
312362	AlmaLinux 8 : corosync (ALSA-2026:13657)	Nessus	Alma Linux Local Security Checks	2026/5/6	2026/5/6	high
316930	RHEL 7 : corosync (RHSA-2026:20916)	Nessus	Red Hat Local Security Checks	2026/5/27	2026/8/6	high

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