Red Hat Security Advisory: corosync security update
Two vulnerabilities have been identified in the Corosync Cluster Engine packages for Red Hat Enterprise Linux 9. 0 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 issued a security advisory (RHSA-2026:14211) and released updated corosync packages to address these issues. The severity of these vulnerabilities is rated as moderate. No known exploits are reported in the wild. The advisory provides detailed instructions and updated packages for remediation.
AI Analysis
Technical Summary
The corosync packages in Red Hat Enterprise Linux 9.0 and related cluster software contain two security vulnerabilities. CVE-2026-35091 involves denial of service and information disclosure triggered by a crafted UDP packet. CVE-2026-35092 involves denial of service caused by an integer overflow during join message validation. These vulnerabilities affect multiple Red Hat Enterprise Linux 9.0 variants including High Availability and Resilient Storage editions. Red Hat Product Security has released updated corosync packages to fix these issues as detailed in advisory RHSA-2026:14211. The vulnerabilities are rated as moderate in severity and no exploits are currently known in the wild.
Potential Impact
Successful exploitation of CVE-2026-35091 can lead to denial of service and potential information disclosure via crafted UDP packets. CVE-2026-35092 can cause denial of service through an integer overflow in join message validation. These impacts affect the availability and confidentiality of the Corosync Cluster Engine in affected Red Hat Enterprise Linux 9.0 systems. No known active exploitation has been reported.
Mitigation Recommendations
Red Hat has released updated corosync packages that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.0 variants should apply the security update as described in Red Hat advisory RHSA-2026:14211. Detailed update instructions are available at https://access.redhat.com/articles/11258. Applying these official patches fully mitigates the vulnerabilities. No additional mitigation steps are required beyond applying the vendor-provided update.
Red Hat Security Advisory: corosync security update
Description
Two vulnerabilities have been identified in the Corosync Cluster Engine packages for Red Hat Enterprise Linux 9. 0 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 issued a security advisory (RHSA-2026:14211) and released updated corosync packages to address these issues. The severity of these vulnerabilities is rated as moderate. No known exploits are reported in the wild. The advisory provides detailed instructions and updated packages for remediation.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The corosync packages in Red Hat Enterprise Linux 9.0 and related cluster software contain two security vulnerabilities. CVE-2026-35091 involves denial of service and information disclosure triggered by a crafted UDP packet. CVE-2026-35092 involves denial of service caused by an integer overflow during join message validation. These vulnerabilities affect multiple Red Hat Enterprise Linux 9.0 variants including High Availability and Resilient Storage editions. Red Hat Product Security has released updated corosync packages to fix these issues as detailed in advisory RHSA-2026:14211. The vulnerabilities are rated as moderate in severity and no exploits are currently known in the wild.
Potential Impact
Successful exploitation of CVE-2026-35091 can lead to denial of service and potential information disclosure via crafted UDP packets. CVE-2026-35092 can cause denial of service through an integer overflow in join message validation. These impacts affect the availability and confidentiality of the Corosync Cluster Engine in affected Red Hat Enterprise Linux 9.0 systems. No known active exploitation has been reported.
Mitigation Recommendations
Red Hat has released updated corosync packages that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.0 variants should apply the security update as described in Red Hat advisory RHSA-2026:14211. Detailed update instructions are available at https://access.redhat.com/articles/11258. Applying these official patches fully mitigates the vulnerabilities. No additional mitigation steps are required beyond applying the vendor-provided update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:14211
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-35092"]
- Cvss Version
- null
Threat ID: 6a160959e29bf47b506208f0
Added to database: 5/26/2026, 8:58:01 PM
Last enriched: 5/26/2026, 9:17:04 PM
Last updated: 5/27/2026, 5:01:05 AM
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.