Red Hat Security Advisory: fence-agents security update
A security update for the fence-agents packages in Red Hat Enterprise Linux 8. 8 addresses a vulnerability in the pyasn1 library (CVE-2026-30922) that allows denial of service via unbounded recursion. Fence-agents are scripts used for remote power management in cluster environments, enabling the forced restart and removal of failed or unreachable nodes. The vulnerability could potentially disrupt cluster operations by causing denial of service conditions. Red Hat has issued an important security advisory with updated packages to fix this issue. The advisory provides detailed instructions for applying the update. No known exploits are reported in the wild at this time.
AI Analysis
Technical Summary
The fence-agents packages in Red Hat Enterprise Linux 8.8 contain a vulnerability in the pyasn1 library (CVE-2026-30922) that can be exploited to cause a denial of service through unbounded recursion. Fence-agents facilitate remote power management for cluster devices, allowing failed or unreachable nodes to be forcibly restarted and removed from the cluster. This vulnerability could impact cluster stability by enabling denial of service conditions. Red Hat has released updated fence-agents packages to remediate this issue as detailed in advisory RHSA-2026:20588.
Potential Impact
The vulnerability allows denial of service via unbounded recursion in the pyasn1 library used by fence-agents. This could disrupt cluster management operations by preventing proper handling of failed or unreachable nodes, potentially affecting availability of clustered services. There are no reports of active exploitation in the wild. The severity is rated as high by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released updated fence-agents packages that address CVE-2026-30922. Users of affected Red Hat Enterprise Linux 8.8 versions should apply the security update as described in Red Hat advisory RHSA-2026:20588 and the referenced article https://access.redhat.com/articles/11258. Applying this update will remediate the vulnerability. No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: fence-agents security update
Description
A security update for the fence-agents packages in Red Hat Enterprise Linux 8. 8 addresses a vulnerability in the pyasn1 library (CVE-2026-30922) that allows denial of service via unbounded recursion. Fence-agents are scripts used for remote power management in cluster environments, enabling the forced restart and removal of failed or unreachable nodes. The vulnerability could potentially disrupt cluster operations by causing denial of service conditions. Red Hat has issued an important security advisory with updated packages to fix this issue. The advisory provides detailed instructions for applying the update. No known exploits are reported in the wild at this time.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The fence-agents packages in Red Hat Enterprise Linux 8.8 contain a vulnerability in the pyasn1 library (CVE-2026-30922) that can be exploited to cause a denial of service through unbounded recursion. Fence-agents facilitate remote power management for cluster devices, allowing failed or unreachable nodes to be forcibly restarted and removed from the cluster. This vulnerability could impact cluster stability by enabling denial of service conditions. Red Hat has released updated fence-agents packages to remediate this issue as detailed in advisory RHSA-2026:20588.
Potential Impact
The vulnerability allows denial of service via unbounded recursion in the pyasn1 library used by fence-agents. This could disrupt cluster management operations by preventing proper handling of failed or unreachable nodes, potentially affecting availability of clustered services. There are no reports of active exploitation in the wild. The severity is rated as high by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released updated fence-agents packages that address CVE-2026-30922. Users of affected Red Hat Enterprise Linux 8.8 versions should apply the security update as described in Red Hat advisory RHSA-2026:20588 and the referenced article https://access.redhat.com/articles/11258. Applying this update will remediate the vulnerability. 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-2026:20588
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a16097ce29bf47b5064910a
Added to database: 5/26/2026, 8:58:36 PM
Last enriched: 5/26/2026, 10:50:56 PM
Last updated: 5/26/2026, 11:28:05 PM
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.