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: Linux kernel (net/mlx5): Use-after-free in ECVF vports unload leads to denial of service (CVE-2025-38109) * kernel: Kernel: Privilege escalation or denial of service in nf_tables via inverted element activity check (CVE-2026-23111) * kernel: Linux kernel: Denial of Service in ice driver due to race condition during VSI rebuild (CVE-2026-23210) * kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain() (CVE-2026-23231) 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 addresses four vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 9 and related variants. The issues include a use-after-free vulnerability in the net/mlx5 ECVF vports unload function (CVE-2025-38109), privilege escalation or denial of service via an inverted element activity check in nf_tables (CVE-2026-23111), a denial of service caused by a race condition during VSI rebuild in the ice driver (CVE-2026-23210), and a use-after-free in nf_tables_addchain() leading to privilege escalation or denial of service (CVE-2026-23231). These vulnerabilities are rated with moderate severity by Red Hat. The advisory provides updated kernel packages that fix these issues, and a system reboot is required to apply the updates.
Potential Impact
The vulnerabilities can cause denial of service conditions or privilege escalation on affected systems running the Linux kernel in Red Hat Enterprise Linux 9 and related products. Exploitation could disrupt system availability or allow unauthorized privilege gains. 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 9 and associated products should apply the security update as detailed in Red Hat advisory RHSA-2026:6570. A system reboot is required for the update to take effect. Patch status is confirmed as available and official fixes have been issued by Red Hat.
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: Linux kernel (net/mlx5): Use-after-free in ECVF vports unload leads to denial of service (CVE-2025-38109) * kernel: Kernel: Privilege escalation or denial of service in nf_tables via inverted element activity check (CVE-2026-23111) * kernel: Linux kernel: Denial of Service in ice driver due to race condition during VSI rebuild (CVE-2026-23210) * kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain() (CVE-2026-23231) 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
This Red Hat security advisory addresses four vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 9 and related variants. The issues include a use-after-free vulnerability in the net/mlx5 ECVF vports unload function (CVE-2025-38109), privilege escalation or denial of service via an inverted element activity check in nf_tables (CVE-2026-23111), a denial of service caused by a race condition during VSI rebuild in the ice driver (CVE-2026-23210), and a use-after-free in nf_tables_addchain() leading to privilege escalation or denial of service (CVE-2026-23231). These vulnerabilities are rated with moderate severity by Red Hat. The advisory provides updated kernel packages that fix these issues, and a system reboot is required to apply the updates.
Potential Impact
The vulnerabilities can cause denial of service conditions or privilege escalation on affected systems running the Linux kernel in Red Hat Enterprise Linux 9 and related products. Exploitation could disrupt system availability or allow unauthorized privilege gains. 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 9 and associated products should apply the security update as detailed in Red Hat advisory RHSA-2026:6570. A system reboot is required for the update to take effect. Patch status is confirmed as available and official fixes have been issued by Red Hat.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:6570
- Cve Count
- 4
- Additional Cves
- ["CVE-2026-23111","CVE-2026-23210","CVE-2026-23231"]
Threat ID: 6a27e9fd8dd33fbd8517cfd5
Added to database: 06/09/2026, 10:25:01 UTC
Last enriched: 07/12/2026, 10:06:17 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 87
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