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 8.4 contain two security flaws: CVE-2026-35091 allows denial of service and information disclosure through crafted UDP packets, and CVE-2026-35092 allows denial of service via an integer overflow during join message validation. These vulnerabilities impact the Corosync Cluster Engine and its C APIs. Red Hat Product Security has rated these issues as moderate severity and issued updated packages to remediate them.
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 by triggering an integer overflow in join message validation. Both vulnerabilities affect cluster communication and stability, potentially disrupting cluster operations.
Mitigation Recommendations
Red Hat has released updated corosync packages for Red Hat Enterprise Linux 8.4 Advanced Update Support and Extended Update Support that address these vulnerabilities. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:14215 and the referenced update article https://access.redhat.com/articles/11258. No additional mitigations are specified by the vendor.
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 8.4 contain two security flaws: CVE-2026-35091 allows denial of service and information disclosure through crafted UDP packets, and CVE-2026-35092 allows denial of service via an integer overflow during join message validation. These vulnerabilities impact the Corosync Cluster Engine and its C APIs. Red Hat Product Security has rated these issues as moderate severity and issued updated packages to remediate them.
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 by triggering an integer overflow in join message validation. Both vulnerabilities affect cluster communication and stability, potentially disrupting cluster operations.
Mitigation Recommendations
Red Hat has released updated corosync packages for Red Hat Enterprise Linux 8.4 Advanced Update Support and Extended Update Support that address these vulnerabilities. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:14215 and the referenced update article https://access.redhat.com/articles/11258. No additional mitigations are specified by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:14215
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-35092"]
- Cvss Version
- null
Threat ID: 6a160958e29bf47b5062037d
Added to database: 05/26/2026, 20:58:00 UTC
Last enriched: 06/26/2026, 01:09:04 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 40
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