Red Hat Security Advisory: corosync security update
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.
AI Analysis
Technical Summary
The corosync packages for Red Hat Enterprise Linux 9.4 Extended Update Support contain two security flaws. CVE-2026-35091 involves denial of service and information disclosure triggered by crafted UDP packets. CVE-2026-35092 involves denial of service caused by an integer overflow during join message validation. Both vulnerabilities affect the Corosync Cluster Engine and its APIs, which are critical components for cluster communication and management. Red Hat has issued an advisory (RHSA-2026:14212) and released updated corosync packages to address these issues.
Potential Impact
Successful exploitation of CVE-2026-35091 can lead to denial of service and unauthorized information disclosure. Exploitation of CVE-2026-35092 can cause denial of service via integer overflow. Both vulnerabilities could disrupt cluster operations relying on corosync, potentially impacting availability and confidentiality of cluster communications.
Mitigation Recommendations
Red Hat has released updated corosync packages for Red Hat Enterprise Linux 9.4 Extended Update Support that fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:14212 and the referenced update article (https://access.redhat.com/articles/11258). No additional mitigations are indicated by the vendor advisory.
Red Hat Security Advisory: corosync security update
Description
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.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The corosync packages for Red Hat Enterprise Linux 9.4 Extended Update Support contain two security flaws. CVE-2026-35091 involves denial of service and information disclosure triggered by crafted UDP packets. CVE-2026-35092 involves denial of service caused by an integer overflow during join message validation. Both vulnerabilities affect the Corosync Cluster Engine and its APIs, which are critical components for cluster communication and management. Red Hat has issued an advisory (RHSA-2026:14212) and released updated corosync packages to address these issues.
Potential Impact
Successful exploitation of CVE-2026-35091 can lead to denial of service and unauthorized information disclosure. Exploitation of CVE-2026-35092 can cause denial of service via integer overflow. Both vulnerabilities could disrupt cluster operations relying on corosync, potentially impacting availability and confidentiality of cluster communications.
Mitigation Recommendations
Red Hat has released updated corosync packages for Red Hat Enterprise Linux 9.4 Extended Update Support that fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:14212 and the referenced update article (https://access.redhat.com/articles/11258). No additional mitigations are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:14212
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-35092"]
- Cvss Version
- null
Threat ID: 6a160958e29bf47b50620392
Added to database: 05/26/2026, 20:58:00 UTC
Last enriched: 06/26/2026, 01:09:15 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 50
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