Medium 2026-08-04

Kernel-Rt Security Update — AlmaLinux 8 (ALSA-2026:49851)

AlmaLinux 8

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: ipc: limit next_id allocation to the valid ID range (CVE-2026-52923) Bug Fix(es) and Enhancement(s): * AlmaLinux8.10 - KVM: s390: L…

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: ipc: limit next_id allocation to the valid ID range (CVE-2026-52923)

Bug Fix(es) and Enhancement(s):

* AlmaLinux8.10 – KVM: s390: L…

Type:

security

Severity:

moderate

Release date:

2026-08-04

Description:

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: ipc: limit next_id allocation to the valid ID range (CVE-2026-52923)
Bug Fix(es) and Enhancement(s):  
  * AlmaLinux8.10 – KVM: s390: Limit adapter indicator access to mapped page (JIRA:AlmaLinux-183880)

  * CIFS mounts do not work with the latest kernel (JIRA:AlmaLinux-213976)
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.

References:

Updated packages listed below:

Architecture	Package	Checksum
x86_64	kernel-rt-debug-core-4.18.0-553.151.1.rt7.492.el8_10.x86_64.rpm	006e0489934ee25cf110e1529ba7bb7d6ee36691d9583060d2a6dcc4c0c88213
x86_64	kernel-rt-modules-extra-4.18.0-553.151.1.rt7.492.el8_10.x86_64.rpm	0bf00111078755f542c040238dedcfdb123fa053bc1e3c35d26515f03b602821
x86_64	kernel-rt-debug-modules-4.18.0-553.151.1.rt7.492.el8_10.x86_64.rpm	179fe34b67a914b4a979c5a20a4cde796cc040aeb801fbb58f90649d1d63e8ab
x86_64	kernel-rt-debug-modules-extra-4.18.0-553.151.1.rt7.492.el8_10.x86_64.rpm	188f271d237b2b2ba7862c7dfd2a934afde776cd3850d047f6df66f1f2d6d380
x86_64	kernel-rt-core-4.18.0-553.151.1.rt7.492.el8_10.x86_64.rpm	385a58bad0ae0fe2f4d3dc7d21221cb4c8de95c9d103df54486e7befaaf7cb44
x86_64	kernel-rt-debug-4.18.0-553.151.1.rt7.492.el8_10.x86_64.rpm	5484273ff1f5969244ec4a31b64ad9a2bf4f2e8cb563e8be0062e573ff7b163d
x86_64	kernel-rt-4.18.0-553.151.1.rt7.492.el8_10.x86_64.rpm	7c7fbfc26e12e91b7e7928c9e9cb1133d8c7193915a3fc669399fb63a7aebe49
x86_64	kernel-rt-devel-4.18.0-553.151.1.rt7.492.el8_10.x86_64.rpm	c44a77fed9c2e0ef7f1cf6e1a3eb7613075807980aaa6e153a64c7e7506d20de
x86_64	kernel-rt-modules-4.18.0-553.151.1.rt7.492.el8_10.x86_64.rpm	e6a502d494671a4aeaf3f562b39bbf02b8bd1e5929dc9585224cbc9c9eaddd29
x86_64	kernel-rt-debug-devel-4.18.0-553.151.1.rt7.492.el8_10.x86_64.rpm	f3a1cf9cbf41a1cedc5a5e44f867df36de56cff56887e595450327cdad01b91d

Notes:

This page is generated automatically from Red Hat security data and has not been checked for errors. For clarification or corrections please contact the AlmaLinux Packaging Team.

How to Apply the Fix

Update the affected packages on your server to the patched release, then restart the relevant services.

sudo dnf update

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