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) enables denial of service through an integer overflow in join message validation. These issues affect multiple Red Hat Enterprise Linux 10 variants and related cluster software. Red Hat has issued a security advisory with updated packages to address these vulnerabilities.
AI Analysis
Technical Summary
The corosync packages for Red Hat Enterprise Linux cluster software contain two vulnerabilities: CVE-2026-35091, which permits denial of service and information disclosure through crafted UDP packets, and CVE-2026-35092, which allows 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-2026:13644 provides updated corosync packages for Red Hat Enterprise Linux 10 and its variants to remediate these issues.
Potential Impact
Exploitation of CVE-2026-35091 can lead to denial of service and potential information disclosure. CVE-2026-35092 can cause denial of service due to an integer overflow. Both vulnerabilities impact the availability and confidentiality of cluster services running corosync on affected Red Hat Enterprise Linux 10 systems.
Mitigation Recommendations
Red Hat has released updated corosync packages that address these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:13644 and the referenced article https://access.redhat.com/articles/11258 to remediate these issues. 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) enables denial of service through an integer overflow in join message validation. These issues affect multiple Red Hat Enterprise Linux 10 variants and related cluster software. 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 for Red Hat Enterprise Linux cluster software contain two vulnerabilities: CVE-2026-35091, which permits denial of service and information disclosure through crafted UDP packets, and CVE-2026-35092, which allows 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-2026:13644 provides updated corosync packages for Red Hat Enterprise Linux 10 and its variants to remediate these issues.
Potential Impact
Exploitation of CVE-2026-35091 can lead to denial of service and potential information disclosure. CVE-2026-35092 can cause denial of service due to an integer overflow. Both vulnerabilities impact the availability and confidentiality of cluster services running corosync on affected Red Hat Enterprise Linux 10 systems.
Mitigation Recommendations
Red Hat has released updated corosync packages that address these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:13644 and the referenced article https://access.redhat.com/articles/11258 to remediate these issues. 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-2026:13644
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-35092"]
- Cvss Version
- null
Threat ID: 6a160959e29bf47b50621364
Added to database: 5/26/2026, 8:58:01 PM
Last enriched: 5/26/2026, 9:18:48 PM
Last updated: 5/27/2026, 4:56:45 AM
Views: 2
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