AlmaLinux alert ALSA-2026:36348 (kernel-rt)

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[Announce] [Security Advisory] ALSA-2026:36348: kernel-rt security, bug fix, and enhancement update (Important)
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Wed, 08 Jul 2026 15:08:05 +0000
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<0100019f42459bdf-fea5f448-933f-4a08-9a15-dbc4ae81bace-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: 2026-07-08

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: tcp: fix potential race in tcp_v6_syn_recv_sock() (CVE-2026-43198)
  * kernel: netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table()
(CVE-2026-43450)
  * kernel: sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL
(CVE-2026-46227)
  * kernel: drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs()
(CVE-2026-46209)
  * kernel: procfs: fix missing RCU protection when reading real_parent in do_task_stat()
(CVE-2026-46259)
  * kernel: Arm Processors: Privilege escalation or information disclosure via writes to higher
exception level resources (CVE-2025-10263)


Bug Fix(es) and Enhancement(s):  

  * kernel panic at trailing_symlink while the task wdavdaemon runs even after 4c4f7c19b3c7
(JIRA:AlmaLinux-152759)


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-2026-36348.html

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AlmaLinux Team
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