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OpenAdvisories
Medium ALSA-2026:6570 4 CVEs

Moderate: kernel security update

Published Apr 6, 2026 · Updated Oct 29, 2026

Ecosystem: AlmaLinux

Summary

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.

Fixed packages 74

ReleasePackageFixed in
AlmaLinux · 9 kernel 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-debug 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-debug-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-debug-devel 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-debug-devel-matched 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-debug-modules 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-debug-modules-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-debug-modules-extra 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-devel 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-devel-matched 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-modules 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-modules-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-64k-modules-extra 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-abi-stablelists 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-cross-headers 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-debug 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-debug-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-debug-devel 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-debug-devel-matched 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-debug-modules 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-debug-modules-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-debug-modules-extra 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-debug-uki-virt 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-devel 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-devel-matched 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-doc 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-headers 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-modules 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-modules-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-modules-extra 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug-devel 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug-modules 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug-modules-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug-modules-extra 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k-devel 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k-modules 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k-modules-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-64k-modules-extra 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-debug 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-debug-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-debug-devel 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-debug-modules 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-debug-modules-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-debug-modules-extra 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-devel 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-modules 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-modules-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-rt-modules-extra 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-tools 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-tools-libs 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-tools-libs-devel 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-uki-virt 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-uki-virt-addons 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-zfcpdump 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-devel 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-devel-matched 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-modules 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-modules-core 5.14.0-611.47.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-modules-extra 5.14.0-611.47.1.el9_7
AlmaLinux · 9 libperf 5.14.0-611.47.1.el9_7
AlmaLinux · 9 perf 5.14.0-611.47.1.el9_7
AlmaLinux · 9 python3-perf 5.14.0-611.47.1.el9_7
AlmaLinux · 9 rtla 5.14.0-611.47.1.el9_7
AlmaLinux · 9 rv 5.14.0-611.47.1.el9_7

Vulnerabilities 4

  • High 7.8
    CVE-2026-23111 Public exploit

    netfilter: nf_tables: fix inverted genmask check in nft_map_catchall_activate()

    In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix inverted genmask check in nft_map_catchall_activate() nft_map_catchall_activate() has an inverted element activity check compared to its non-catchall counterpart nft…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-23231 Public exploit

    netfilter: nf_tables: fix use-after-free in nf_tables_addchain()

    In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix use-after-free in nf_tables_addchain() nf_tables_addchain() publishes the chain to table->chains via list_add_tail_rcu() (in nft_chain_add()) before registering hook…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2025-38109

    net/mlx5: Fix ECVF vports unload on shutdown flow

    In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix ECVF vports unload on shutdown flow Fix shutdown flow UAF when a virtual function is created on the embedded chip (ECVF) of a BlueField device. In such case the vport acl ingres…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-23210

    ice: Fix PTP NULL pointer dereference during VSI rebuild

    In the Linux kernel, the following vulnerability has been resolved: ice: Fix PTP NULL pointer dereference during VSI rebuild Fix race condition where PTP periodic work runs while VSI is being rebuilt, accessing NULL vsi->rx_rings. The sequence was: 1. ice_ptp…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu

References

  • report
    https://access.redhat.com/security/cve/CVE-2025-38109
  • report
    https://access.redhat.com/security/cve/CVE-2026-23111
  • report
    https://access.redhat.com/security/cve/CVE-2026-23210
  • report
    https://access.redhat.com/security/cve/CVE-2026-23231
  • report
    https://bugzilla.redhat.com/2376101
  • report
    https://bugzilla.redhat.com/2439687
  • report
    https://bugzilla.redhat.com/2439895
  • report
    https://bugzilla.redhat.com/2444376
  • advisory
    https://errata.almalinux.org/9/ALSA-2026-6570.html