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: rcu/nocb: Fix missed RCU barrier on deoffloading (CVE-2024-56547) * kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit (CVE-2025-39766) * kernel: Linux kernel: Denial of Service in ice driver due to race condition during VSI rebuild (CVE-2026-23210) * kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service (CVE-2026-31419) * kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163) 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 advisory covers five kernel vulnerabilities: CVE-2024-56547 fixes a missed RCU barrier on deoffloading; CVE-2025-39766 modifies the cake_enqueue function to return NET_XMIT_CN when past buffer_limit; CVE-2026-23210 addresses a denial of service caused by a race condition during VSI rebuild in the ice driver; CVE-2026-31419 fixes a use-after-free in the bonding driver leading to denial of service; and CVE-2026-43163 resolves a general protection fault in md/bitmap triggered by a resize race. These fixes are included in updated kernel packages for Red Hat Enterprise Linux 10.0 EUS and related CodeReady Linux Builder variants. The advisory recommends applying the update and rebooting the system for the fixes to take effect.
Potential Impact
The vulnerabilities collectively can lead to denial of service conditions and potential system instability due to race conditions, use-after-free bugs, and missed synchronization barriers in the kernel. These issues affect core kernel components and drivers, potentially impacting system reliability and availability. 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 of Red Hat Enterprise Linux 10.0 Extended Update Support and related variants should apply the provided kernel updates as detailed in the Red Hat advisory RHSA-2026:22334. A system reboot is required to activate the updated kernel and fully remediate the issues. Patch status is confirmed by the vendor advisory.
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: rcu/nocb: Fix missed RCU barrier on deoffloading (CVE-2024-56547) * kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit (CVE-2025-39766) * kernel: Linux kernel: Denial of Service in ice driver due to race condition during VSI rebuild (CVE-2026-23210) * kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service (CVE-2026-31419) * kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163) 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 advisory covers five kernel vulnerabilities: CVE-2024-56547 fixes a missed RCU barrier on deoffloading; CVE-2025-39766 modifies the cake_enqueue function to return NET_XMIT_CN when past buffer_limit; CVE-2026-23210 addresses a denial of service caused by a race condition during VSI rebuild in the ice driver; CVE-2026-31419 fixes a use-after-free in the bonding driver leading to denial of service; and CVE-2026-43163 resolves a general protection fault in md/bitmap triggered by a resize race. These fixes are included in updated kernel packages for Red Hat Enterprise Linux 10.0 EUS and related CodeReady Linux Builder variants. The advisory recommends applying the update and rebooting the system for the fixes to take effect.
Potential Impact
The vulnerabilities collectively can lead to denial of service conditions and potential system instability due to race conditions, use-after-free bugs, and missed synchronization barriers in the kernel. These issues affect core kernel components and drivers, potentially impacting system reliability and availability. 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 of Red Hat Enterprise Linux 10.0 Extended Update Support and related variants should apply the provided kernel updates as detailed in the Red Hat advisory RHSA-2026:22334. A system reboot is required to activate the updated kernel and fully remediate the issues. Patch status is confirmed 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-2026:22334
- Cve Count
- 5
- Additional Cves
- ["CVE-2025-39766","CVE-2026-23210","CVE-2026-31419","CVE-2026-43163"]
- Cvss Version
- null
Threat ID: 6a209828e29bf47b50ebccf8
Added to database: 06/03/2026, 21:10:00 UTC
Last enriched: 07/07/2026, 00:44:15 UTC
Last updated: 07/31/2026, 19:22:52 UTC
Views: 109
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.