High 2026-08-02

Kernel-Rt Security Update — AlmaLinux 8 (ALSA-2026:49213)

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: rtnetlink: add missing netlink_ns_capable() check for peer netns (CVE-2026-31692) * kernel: netfilter: ctnetlink: ensure safe access to …

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: rtnetlink: add missing netlink_ns_capable() check for peer netns (CVE-2026-31692)
* kernel: netfilter: ctnetlink: ensure safe access to …

Type:

security

Severity:

important

Release date:

2026-08-02

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: rtnetlink: add missing netlink_ns_capable() check for peer netns (CVE-2026-31692)

  * kernel: netfilter: ctnetlink: ensure safe access to master conntrack (CVE-2026-43116)

  * kernel: fanotify: fix false positive on permission events (CVE-2026-46150)

  * kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle ()

  * kernel: net/sched: cls_api: Handle TC_ACT_CONSUMED in tcf_qevent_handle (CVE-2026-64530)
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-4.18.0-553.150.1.rt7.491.el8_10.x86_64.rpm	4337c4d2ea9e07e1c02965c15ff6cf429dc7f0b4552075027dacc65951975418
x86_64	kernel-rt-core-4.18.0-553.150.1.rt7.491.el8_10.x86_64.rpm	4ccd63bef56db655afc10a243bc5ae78d37777fe31496faeddadb7dabf156fbb
x86_64	kernel-rt-debug-devel-4.18.0-553.150.1.rt7.491.el8_10.x86_64.rpm	5eb39f93047e46bd5e8304f5f1d7583138475faa60d8802f09b083ea73a92e85
x86_64	kernel-rt-debug-4.18.0-553.150.1.rt7.491.el8_10.x86_64.rpm	9e9c94ebccd8a6007e607f1d1ae3506e9d6ec912a67d5d9e136ebe3323a41718
x86_64	kernel-rt-debug-modules-extra-4.18.0-553.150.1.rt7.491.el8_10.x86_64.rpm	b0445a703a0ee688edac1fc6832b0427276b482dc2a64252d18ac3e790871028
x86_64	kernel-rt-modules-extra-4.18.0-553.150.1.rt7.491.el8_10.x86_64.rpm	bd3aeddba490013026dfbd87a9441903f7507d81303bc8264d1b72690a30af4c
x86_64	kernel-rt-devel-4.18.0-553.150.1.rt7.491.el8_10.x86_64.rpm	ce52c2a8ecbb29c1a0eb3152cc99ea5adcbb33f21bc4529865b3d7648ee5f5fc
x86_64	kernel-rt-4.18.0-553.150.1.rt7.491.el8_10.x86_64.rpm	d53c31bad7718fdb5a2a46e6cf8339687429d993e659b1257fbbbb4174f7b405
x86_64	kernel-rt-debug-modules-4.18.0-553.150.1.rt7.491.el8_10.x86_64.rpm	f3b1c0f03b647819c5d038ecb09a84acc09e0c656b309cf822a22eed719b8e64
x86_64	kernel-rt-modules-4.18.0-553.150.1.rt7.491.el8_10.x86_64.rpm	fa486b96188223bbcc2a7757993e178a27159763f75b8f1d51bb8ff78eb2c005

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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