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 8.8 contain two security vulnerabilities: CVE-2026-35091, which permits denial of service and information disclosure through a specially crafted UDP packet, and CVE-2026-35092, which allows denial of service via an integer overflow during join message validation. These issues affect the Corosync Cluster Engine and its C APIs used in cluster software. Red Hat has released updated corosync packages to fix these vulnerabilities as detailed in advisory RHSA-2026:14216. The vulnerabilities are rated moderate in impact and no exploits are currently known in the wild.
Potential Impact
Successful exploitation of CVE-2026-35091 can cause denial of service and information disclosure in the Corosync Cluster Engine. CVE-2026-35092 can cause denial of service due to an integer overflow in join message validation. These vulnerabilities affect cluster communication reliability and confidentiality, potentially disrupting cluster operations and exposing sensitive cluster data. No known active exploitation has been reported.
Mitigation Recommendations
Red Hat has released updated corosync packages for Red Hat Enterprise Linux 8.8 to address these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:14216 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation is indicated by the vendor advisory. Patch status is confirmed as fixed in the updated packages.
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 8.8 contain two security vulnerabilities: CVE-2026-35091, which permits denial of service and information disclosure through a specially crafted UDP packet, and CVE-2026-35092, which allows denial of service via an integer overflow during join message validation. These issues affect the Corosync Cluster Engine and its C APIs used in cluster software. Red Hat has released updated corosync packages to fix these vulnerabilities as detailed in advisory RHSA-2026:14216. The vulnerabilities are rated moderate in impact and no exploits are currently known in the wild.
Potential Impact
Successful exploitation of CVE-2026-35091 can cause denial of service and information disclosure in the Corosync Cluster Engine. CVE-2026-35092 can cause denial of service due to an integer overflow in join message validation. These vulnerabilities affect cluster communication reliability and confidentiality, potentially disrupting cluster operations and exposing sensitive cluster data. No known active exploitation has been reported.
Mitigation Recommendations
Red Hat has released updated corosync packages for Red Hat Enterprise Linux 8.8 to address these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:14216 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation is indicated by the vendor advisory. Patch status is confirmed as fixed in the updated packages.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:14216
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-35092"]
- Cvss Version
- null
Threat ID: 6a160959e29bf47b506208e2
Added to database: 05/26/2026, 20:58:01 UTC
Last enriched: 06/26/2026, 01:08:53 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 64
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