Red Hat Security Advisory: corosync security update
Two vulnerabilities affecting the corosync packages in Red Hat Enterprise Linux 9 have been identified. CVE-2026-35091 allows denial of service and information disclosure via a crafted UDP packet. CVE-2026-35092 allows denial of service through an integer overflow during join message validation. Red Hat has issued a security advisory with updates addressing these issues. The vulnerabilities are rated as moderate in severity. No known exploits are reported in the wild at this time.
AI Analysis
Technical Summary
The corosync packages, which provide the Corosync Cluster Engine and C APIs for Red Hat Enterprise Linux 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 in join message validation. These issues affect multiple Red Hat Enterprise Linux 9 variants including High Availability and CodeReady Linux Builder. Red Hat has released updated packages to address these vulnerabilities as detailed in advisory RHSA-2026:13673.
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 due to integer overflow during join message validation. Both vulnerabilities impact cluster communication components, potentially disrupting cluster operations. No known active exploits have been reported.
Mitigation Recommendations
Red Hat has released updated corosync packages for Red Hat Enterprise Linux 9 and related variants to address these vulnerabilities. Users should apply the security updates as described in Red Hat advisory RHSA-2026:13673 and the referenced article https://access.redhat.com/articles/11258. Patch status is confirmed with official fixes available. No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: corosync security update
Description
Two vulnerabilities affecting the corosync packages in Red Hat Enterprise Linux 9 have been identified. CVE-2026-35091 allows denial of service and information disclosure via a crafted UDP packet. CVE-2026-35092 allows denial of service through an integer overflow during join message validation. Red Hat has issued a security advisory with updates addressing these issues. The vulnerabilities are rated as moderate in severity. No known exploits are reported in the wild at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The corosync packages, which provide the Corosync Cluster Engine and C APIs for Red Hat Enterprise Linux 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 in join message validation. These issues affect multiple Red Hat Enterprise Linux 9 variants including High Availability and CodeReady Linux Builder. Red Hat has released updated packages to address these vulnerabilities as detailed in advisory RHSA-2026:13673.
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 due to integer overflow during join message validation. Both vulnerabilities impact cluster communication components, potentially disrupting cluster operations. No known active exploits have been reported.
Mitigation Recommendations
Red Hat has released updated corosync packages for Red Hat Enterprise Linux 9 and related variants to address these vulnerabilities. Users should apply the security updates as described in Red Hat advisory RHSA-2026:13673 and the referenced article https://access.redhat.com/articles/11258. Patch status is confirmed with official fixes available. No additional mitigation steps are indicated 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-2026:13673
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-35092"]
- Cvss Version
- null
Threat ID: 6a160959e29bf47b50621372
Added to database: 5/26/2026, 8:58:01 PM
Last enriched: 5/26/2026, 9:19:08 PM
Last updated: 5/27/2026, 4:51:22 AM
Views: 2
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