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 in Red Hat Enterprise Linux cluster software contain two security flaws: CVE-2026-35091 enables denial of service and information disclosure triggered by a crafted UDP packet, and CVE-2026-35092 enables denial of service via an integer overflow during join message validation. These vulnerabilities have been rated with moderate severity by Red Hat Product Security. Security updates fixing these issues are available for Red Hat Enterprise Linux 9.2 and related variants. The advisory references fixes in corosync version 3.1.7-1.el9_2.1 and provides links for applying the update.
Potential Impact
Successful exploitation of CVE-2026-35091 could lead to denial of service and unauthorized information disclosure. CVE-2026-35092 could cause denial of service due to an integer overflow. Both vulnerabilities impact cluster communication components, potentially disrupting cluster operations. No known exploits in the wild have been reported. The overall security impact is moderate.
Mitigation Recommendations
Red Hat has released updated corosync packages (version 3.1.7-1.el9_2.1) that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.2 variants should apply the provided security updates promptly following Red Hat's official guidance at 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 in Red Hat Enterprise Linux cluster software contain two security flaws: CVE-2026-35091 enables denial of service and information disclosure triggered by a crafted UDP packet, and CVE-2026-35092 enables denial of service via an integer overflow during join message validation. These vulnerabilities have been rated with moderate severity by Red Hat Product Security. Security updates fixing these issues are available for Red Hat Enterprise Linux 9.2 and related variants. The advisory references fixes in corosync version 3.1.7-1.el9_2.1 and provides links for applying the update.
Potential Impact
Successful exploitation of CVE-2026-35091 could lead to denial of service and unauthorized information disclosure. CVE-2026-35092 could cause denial of service due to an integer overflow. Both vulnerabilities impact cluster communication components, potentially disrupting cluster operations. No known exploits in the wild have been reported. The overall security impact is moderate.
Mitigation Recommendations
Red Hat has released updated corosync packages (version 3.1.7-1.el9_2.1) that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.2 variants should apply the provided security updates promptly following Red Hat's official guidance at 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-2026:14210
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-35092"]
- Cvss Version
- null
Threat ID: 6a160959e29bf47b506208e9
Added to database: 05/26/2026, 20:58:01 UTC
Last enriched: 06/26/2026, 01:09:40 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 52
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