High 2026-07-21

Kernel-Rt Security Update — AlmaLinux 8 (ALSA-2026:42550)

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: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117) * kernel: Bluetooth: l2cap: Add missing chan lo…

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: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117)
* kernel: Bluetooth: l2cap: Add missing chan lo…

Type:

security

Severity:

important

Release date:

2026-07-21

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: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117)

  * kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp (CVE-2026-53071)
Bug Fix(es) and Enhancement(s):  
  * [almalinux-8] WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected – at: vmd_pci_write+0x85/0xe0 – deadlock (JIRA:AlmaLinux-174916)
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-4.18.0-553.146.1.rt7.487.el8_10.x86_64.rpm	04550288bd4a2169e4b4ad0d3cc3c7cc21c1a3efb44ecfbe9e1ae7fabf867f2c
x86_64	kernel-rt-debug-modules-4.18.0-553.146.1.rt7.487.el8_10.x86_64.rpm	1211b4ae0c7d3cad6b0d16a95e62654ad08917b04026a1714acb7f8ab3ab9ff5
x86_64	kernel-rt-modules-4.18.0-553.146.1.rt7.487.el8_10.x86_64.rpm	28c5a6e6e40202a4a9c5c0cb2c1f801a1689843289e87f7df6e8c1b60732c865
x86_64	kernel-rt-devel-4.18.0-553.146.1.rt7.487.el8_10.x86_64.rpm	48514d6e1e8cf391664fed1d6949ec785e2df9a4889f26c7f7cb536e77cacbaf
x86_64	kernel-rt-debug-4.18.0-553.146.1.rt7.487.el8_10.x86_64.rpm	4dd86870ad9db2461d2c59eb779e628fc1cd33ef42ecb88b7d3023662dadf8e7
x86_64	kernel-rt-modules-extra-4.18.0-553.146.1.rt7.487.el8_10.x86_64.rpm	82c9596966b423825e6ff45f3c70fb9b32f4798ab0dcaacf2c2162751d2e8412
x86_64	kernel-rt-debug-core-4.18.0-553.146.1.rt7.487.el8_10.x86_64.rpm	9153f70f0333f0fa7413460a8873227b7365f81e06b00ea3c70f23cfc31ec882
x86_64	kernel-rt-debug-modules-extra-4.18.0-553.146.1.rt7.487.el8_10.x86_64.rpm	95080d8630ee260687371aab1ad806677e4d5a05a04aaaeaf4adf5bb3ed1cf52
x86_64	kernel-rt-debug-devel-4.18.0-553.146.1.rt7.487.el8_10.x86_64.rpm	e0eba729ef70cb17e1736bfcba6c7a0c8b6f8b5cc7872363aaf6cc4b699a6bf5
x86_64	kernel-rt-core-4.18.0-553.146.1.rt7.487.el8_10.x86_64.rpm	e9300dbff1a5c07fb4fd1afa5871456a7b9b023316df8f616a274d995db7e998

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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