Red Hat Security Advisory: kernel security update
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: net/mlx5: Always stop health timer during driver removal (CVE-2024-40906) * kernel: net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink (CVE-2024-44970) * kernel: vsock: Keep the binding until socket destruction (CVE-2025-21756) 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 Red Hat security advisory RHSA-2025:8056 details fixes for three kernel vulnerabilities affecting Red Hat Enterprise Linux 8. CVE-2024-40906 involves ensuring the health timer is always stopped during the removal of the mlx5 network driver. CVE-2024-44970 addresses an invalid unlink operation in the work queue linked list within the mlx5e driver. CVE-2025-21756 fixes an issue in the vsock subsystem where the binding was not retained until socket destruction. These fixes are included in updated kernel packages that must be installed and require a system reboot to take effect.
Potential Impact
The vulnerabilities affect the Linux kernel, the core component of the operating system, potentially leading to stability or security issues related to network drivers and socket handling. Red Hat rates the security impact as Important, indicating these issues could be exploited to cause denial of service or other impacts on affected systems. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users should apply the kernel update as provided in advisory RHSA-2025:8056 and reboot their systems to ensure the fixes take effect. For detailed update instructions, refer to Red Hat's official guidance at https://access.redhat.com/articles/11258. No additional mitigations are specified beyond applying the official update.
Red Hat Security Advisory: kernel security update
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: net/mlx5: Always stop health timer during driver removal (CVE-2024-40906) * kernel: net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink (CVE-2024-44970) * kernel: vsock: Keep the binding until socket destruction (CVE-2025-21756) 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 Red Hat security advisory RHSA-2025:8056 details fixes for three kernel vulnerabilities affecting Red Hat Enterprise Linux 8. CVE-2024-40906 involves ensuring the health timer is always stopped during the removal of the mlx5 network driver. CVE-2024-44970 addresses an invalid unlink operation in the work queue linked list within the mlx5e driver. CVE-2025-21756 fixes an issue in the vsock subsystem where the binding was not retained until socket destruction. These fixes are included in updated kernel packages that must be installed and require a system reboot to take effect.
Potential Impact
The vulnerabilities affect the Linux kernel, the core component of the operating system, potentially leading to stability or security issues related to network drivers and socket handling. Red Hat rates the security impact as Important, indicating these issues could be exploited to cause denial of service or other impacts on affected systems. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users should apply the kernel update as provided in advisory RHSA-2025:8056 and reboot their systems to ensure the fixes take effect. For detailed update instructions, refer to Red Hat's official guidance at https://access.redhat.com/articles/11258. No additional mitigations are specified beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:8056
- Cve Count
- 3
- Additional Cves
- ["CVE-2024-44970","CVE-2025-21756"]
Threat ID: 6a3da1d14853345fc18250ec
Added to database: 06/25/2026, 21:46:57 UTC
Last enriched: 06/25/2026, 22:09:52 UTC
Last updated: 09/10/2026, 19:36:48 UTC
Views: 56
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.