Red Hat Security Advisory: kernel security update

Fixed packages 158

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
  Feb 13, 2026
• 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
  Mar 4, 2026
• 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
  Jul 3, 2025
• 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
  Feb 14, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2376101
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2439687
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2439895
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2444376
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_6570.json
• report
  https://access.redhat.com/security/cve/CVE-2025-38109
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38109
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38109
• article
  https://lore.kernel.org/linux-cve-announce/2025070323-CVE-2025-38109-f925@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-23111
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-23111
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-23111
• article
  https://lore.kernel.org/linux-cve-announce/2026021300-CVE-2026-23111-9762@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-23210
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-23210
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-23210
• article
  https://lore.kernel.org/linux-cve-announce/2026021439-CVE-2026-23210-7cac@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-23231
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-23231
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-23231
• article
  https://lore.kernel.org/linux-cve-announce/2026030436-CVE-2026-23231-1a96@gregkh/T