AlmaLinux alert ALSA-2026:26428 (kernel-rt)

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[Announce]  [Security Advisory] ALSA-2026:26428: kernel-rt security update (Important)
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Wed, 17 Jun 2026 13:05:44 +0000
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<0100019ed5b00993-c18f8fde-ec4a-4f05-84bf-6e06a2995e89-000000@email.amazonses.com>
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Article
Hi,

You are receiving an AlmaLinux Security update email because you subscribed to receive errata
notifications from AlmaLinux.

AlmaLinux: 8
Type: Security
Severity: Important
Release date: 2026-06-17

Summary:

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems
with extremely high determinism requirements.  

Security Fix(es):  

  * kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)
  * kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)
  * kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)
  * kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)
  * kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329)
  * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)
  * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)
  * kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)


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.


Full details, updated packages, references, and other related information:
https://errata.almalinux.org/8/ALSA-2026-26428.html

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Kind regards,
AlmaLinux Team
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