Red Hat Security Advisory: corosync security update
Two security vulnerabilities have been identified in the corosync packages used by Red Hat Enterprise Linux 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) allows denial of service through an integer overflow in join message validation. These issues affect multiple Red Hat Enterprise Linux 9. 6 variants and related cluster and builder products. Red Hat has issued a security advisory with updated packages to address these vulnerabilities.
AI Analysis
Technical Summary
The corosync packages in Red Hat Enterprise Linux cluster software contain two vulnerabilities: CVE-2026-35091 enables denial of service and information disclosure through crafted UDP packets, and CVE-2026-35092 enables denial of service via an integer overflow during join message validation. Both vulnerabilities have been rated with moderate severity by Red Hat Product Security. The advisory RHSA-2026:14213 provides updated corosync packages for Red Hat Enterprise Linux 9.6 Extended Update Support and related products to remediate these issues.
Potential Impact
Successful exploitation of CVE-2026-35091 can cause denial of service and potentially disclose information by sending crafted UDP packets to the corosync service. CVE-2026-35092 can cause denial of service due to an integer overflow during join message validation. These impacts affect the availability and confidentiality of cluster services relying on corosync in affected Red Hat Enterprise Linux versions.
Mitigation Recommendations
Red Hat has released updated corosync packages addressing these vulnerabilities as part of advisory RHSA-2026:14213. Users of affected Red Hat Enterprise Linux 9.6 Extended Update Support and related products should apply the provided security updates promptly. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor advisory.
Red Hat Security Advisory: corosync security update
Description
Two security vulnerabilities have been identified in the corosync packages used by Red Hat Enterprise Linux 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) allows denial of service through an integer overflow in join message validation. These issues affect multiple Red Hat Enterprise Linux 9. 6 variants and related cluster and builder products. Red Hat has issued a security advisory with updated packages to address these vulnerabilities.
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 enables denial of service and information disclosure through crafted UDP packets, and CVE-2026-35092 enables denial of service via an integer overflow during join message validation. Both vulnerabilities have been rated with moderate severity by Red Hat Product Security. The advisory RHSA-2026:14213 provides updated corosync packages for Red Hat Enterprise Linux 9.6 Extended Update Support and related products to remediate these issues.
Potential Impact
Successful exploitation of CVE-2026-35091 can cause denial of service and potentially disclose information by sending crafted UDP packets to the corosync service. CVE-2026-35092 can cause denial of service due to an integer overflow during join message validation. These impacts affect the availability and confidentiality of cluster services relying on corosync in affected Red Hat Enterprise Linux versions.
Mitigation Recommendations
Red Hat has released updated corosync packages addressing these vulnerabilities as part of advisory RHSA-2026:14213. Users of affected Red Hat Enterprise Linux 9.6 Extended Update Support and related products should apply the provided security updates promptly. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps 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-2026:14213
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-35092"]
- Cvss Version
- null
Threat ID: 6a160959e29bf47b50620952
Added to database: 5/26/2026, 8:58:01 PM
Last enriched: 5/26/2026, 9:17:12 PM
Last updated: 5/27/2026, 4:48:42 AM
Views: 2
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