Red Hat Security Advisory: corosync security update
Two 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 7 Extended Lifecycle Support variants. Red Hat has issued a security advisory rating the impact as moderate and has released updated corosync packages to address these vulnerabilities.
AI Analysis
Technical Summary
The corosync packages for Red Hat Enterprise Linux cluster software contain two security flaws: CVE-2026-35091 permits denial of service and information disclosure triggered by a crafted UDP packet, and CVE-2026-35092 permits denial of service via an integer overflow during join message validation. These vulnerabilities affect Red Hat Enterprise Linux 7 Extended Lifecycle Support High Availability and Resilient Storage variants for x86_64 and IBM Power architectures. Red Hat Product Security has rated these issues as moderate severity and published updated corosync packages to remediate the vulnerabilities.
Potential Impact
Successful exploitation of CVE-2026-35091 can cause denial of service and information disclosure, while CVE-2026-35092 can cause denial of service due to integer overflow. Both vulnerabilities impact cluster communication components, potentially disrupting cluster operations. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated corosync packages that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 7 Extended Lifecycle Support High Availability and Resilient Storage variants should apply the security update as described in Red Hat Advisory RHSA-2026:20916. Detailed update instructions are available at 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 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 7 Extended Lifecycle Support variants. Red Hat has issued a security advisory rating the impact as moderate and has released updated corosync 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 security flaws: CVE-2026-35091 permits denial of service and information disclosure triggered by a crafted UDP packet, and CVE-2026-35092 permits denial of service via an integer overflow during join message validation. These vulnerabilities affect Red Hat Enterprise Linux 7 Extended Lifecycle Support High Availability and Resilient Storage variants for x86_64 and IBM Power architectures. Red Hat Product Security has rated these issues as moderate severity and published updated corosync packages to remediate the vulnerabilities.
Potential Impact
Successful exploitation of CVE-2026-35091 can cause denial of service and information disclosure, while CVE-2026-35092 can cause denial of service due to integer overflow. Both vulnerabilities impact cluster communication components, potentially disrupting cluster operations. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated corosync packages that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 7 Extended Lifecycle Support High Availability and Resilient Storage variants should apply the security update as described in Red Hat Advisory RHSA-2026:20916. Detailed update instructions are available at 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-2026:20916
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-35092"]
- Cvss Version
- null
Threat ID: 6a160958e29bf47b5061f25c
Added to database: 5/26/2026, 8:58:00 PM
Last enriched: 5/26/2026, 9:13:51 PM
Last updated: 5/27/2026, 4:56:44 AM
Views: 5
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