RHSA-2026:6570 - Security Advisory

标题

An update for kernel is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

描述

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.

解决方案

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

受影响的产品

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64
• Red Hat CodeReady Linux Builder for x86_64 9 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian 9 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 9 aarch64
• Red Hat CodeReady Linux Builder for IBM z Systems 9 s390x

修复

• BZ - 2376101 - CVE-2025-38109 kernel: Linux kernel (net/mlx5): Use-after-free in ECVF vports unload leads to denial of service
• BZ - 2439687 - CVE-2026-23111 kernel: Kernel: Privilege escalation or denial of service in nf_tables via inverted element activity check
• BZ - 2439895 - CVE-2026-23210 kernel: Linux kernel: Denial of Service in ice driver due to race condition during VSI rebuild
• BZ - 2444376 - CVE-2026-23231 kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain()

CVE

• CVE-2025-38109
• CVE-2026-23111
• CVE-2026-23210
• CVE-2026-23231

参考

• https://access.redhat.com/security/updates/classification/#moderate