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
This Red Hat security advisory (RHSA-2026:22334) addresses five kernel vulnerabilities affecting Red Hat Enterprise Linux 10.0 EUS and related products. The fixed issues include CVE-2024-56547 (missed RCU barrier on deoffloading), CVE-2025-39766 (net/sched cake_enqueue buffer limit handling), CVE-2026-23210 (denial of service via race condition in ice driver VSI rebuild), CVE-2026-31419 (use-after-free in bonding driver causing denial of service), and CVE-2026-43163 (general protection fault in md/bitmap due to resize race). The advisory provides updated kernel packages that resolve these vulnerabilities. A system reboot is required to apply the fixes. The advisory does not provide CVSS scores but rates the overall impact as Important.
Potential Impact
The vulnerabilities fixed by this advisory could lead to denial of service conditions and potential system instability due to race conditions and use-after-free bugs in kernel components. The missed RCU barrier could cause subtle kernel synchronization issues. While no known exploits in the wild have been reported, these issues affect the core Linux kernel and could impact system reliability and security if left unpatched.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 10.0 EUS and related products should apply the kernel update as provided in advisory RHSA-2026:22334. A system reboot is required for the update to take effect. No additional mitigations are indicated 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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory (RHSA-2026:22334) addresses five kernel vulnerabilities affecting Red Hat Enterprise Linux 10.0 EUS and related products. The fixed issues include CVE-2024-56547 (missed RCU barrier on deoffloading), CVE-2025-39766 (net/sched cake_enqueue buffer limit handling), CVE-2026-23210 (denial of service via race condition in ice driver VSI rebuild), CVE-2026-31419 (use-after-free in bonding driver causing denial of service), and CVE-2026-43163 (general protection fault in md/bitmap due to resize race). The advisory provides updated kernel packages that resolve these vulnerabilities. A system reboot is required to apply the fixes. The advisory does not provide CVSS scores but rates the overall impact as Important.
Potential Impact
The vulnerabilities fixed by this advisory could lead to denial of service conditions and potential system instability due to race conditions and use-after-free bugs in kernel components. The missed RCU barrier could cause subtle kernel synchronization issues. While no known exploits in the wild have been reported, these issues affect the core Linux kernel and could impact system reliability and security if left unpatched.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 10.0 EUS and related products should apply the kernel update as provided in advisory RHSA-2026:22334. A system reboot is required for the update to take effect. No additional mitigations 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-2026:22334
- 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: 6/3/2026, 9:10:00 PM
Last enriched: 6/3/2026, 9:11:29 PM
Last updated: 6/4/2026, 6:19:03 AM
Views: 6
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