Red Hat Security Advisory: corosync security update
Two security vulnerabilities have been identified in the Corosync Cluster Engine packages for Red Hat Enterprise Linux 9. 2 and related cluster software. The first vulnerability (CVE-2026-35091) allows denial of service and information disclosure via a crafted UDP packet. The second vulnerability (CVE-2026-35092) enables denial of service through an integer overflow in join message validation. Red Hat has released updated corosync packages addressing these issues. The security impact is rated as moderate by Red Hat Product Security.
AI Analysis
Technical Summary
The corosync packages in Red Hat Enterprise Linux cluster software contain two vulnerabilities: CVE-2026-35091, which permits denial of service and information disclosure triggered by a crafted UDP packet, and CVE-2026-35092, which causes denial of service via an integer overflow during join message validation. These issues affect multiple Red Hat Enterprise Linux 9.2 variants including High Availability and Resilient Storage. Red Hat has issued security updates to fix these vulnerabilities as detailed in advisory RHSA-2026:14210.
Potential Impact
Successful exploitation of CVE-2026-35091 can lead to denial of service and unauthorized information disclosure. CVE-2026-35092 can cause denial of service due to an integer overflow in message validation. Both vulnerabilities impact the availability and confidentiality of cluster services running corosync on affected Red Hat Enterprise Linux 9.2 systems. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated corosync packages that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.2 cluster software should apply the security update as described in Red Hat advisory RHSA-2026:14210 and the referenced article https://access.redhat.com/articles/11258. Applying this official fix mitigates the vulnerabilities. Patch status is confirmed as fixed by Red Hat.
Red Hat Security Advisory: corosync security update
Description
Two security vulnerabilities have been identified in the Corosync Cluster Engine packages for Red Hat Enterprise Linux 9. 2 and related cluster software. The first vulnerability (CVE-2026-35091) allows denial of service and information disclosure via a crafted UDP packet. The second vulnerability (CVE-2026-35092) enables denial of service through an integer overflow in join message validation. Red Hat has released updated corosync packages addressing these issues. The security impact is rated as moderate by Red Hat Product Security.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The corosync packages in Red Hat Enterprise Linux cluster software contain two vulnerabilities: CVE-2026-35091, which permits denial of service and information disclosure triggered by a crafted UDP packet, and CVE-2026-35092, which causes denial of service via an integer overflow during join message validation. These issues affect multiple Red Hat Enterprise Linux 9.2 variants including High Availability and Resilient Storage. Red Hat has issued security updates to fix these vulnerabilities as detailed in advisory RHSA-2026:14210.
Potential Impact
Successful exploitation of CVE-2026-35091 can lead to denial of service and unauthorized information disclosure. CVE-2026-35092 can cause denial of service due to an integer overflow in message validation. Both vulnerabilities impact the availability and confidentiality of cluster services running corosync on affected Red Hat Enterprise Linux 9.2 systems. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated corosync packages that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.2 cluster software should apply the security update as described in Red Hat advisory RHSA-2026:14210 and the referenced article https://access.redhat.com/articles/11258. Applying this official fix mitigates the vulnerabilities. Patch status is confirmed as fixed by Red Hat.
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: 5/26/2026, 8:58:01 PM
Last enriched: 5/26/2026, 9:16:55 PM
Last updated: 5/27/2026, 4:56:46 AM
Views: 2
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