Kernel-Rt Security Update — AlmaLinux 8 (ALSA-2026:50979)
This is a security release for AlmaLinux 8. The fix ships in the current release line (referenced builds: 18.0-553, 153.1). Update the product on every affected server to the patched release — there is no workaround, and unpatched servers remain exposed until updated.
Команды исправления
EL8+ (AlmaLinux/CloudLinux/Rocky)
sudo dnf updateЧто это значит по лицензии SharedLicense
Kernel flaws of this class (top severity in the notice's own data: CVSS 7, CWE-1189) are local-attacker material — crashes or privilege-adjacent outcomes — so shared-hosting servers should treat this as routine-priority patching.
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: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation (CVE-2025-54518)
Bug Fix(es) and Enhancement(s):
*…
Type:
security
Severity:
important
Release date:
2026-08-06
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: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation (CVE-2025-54518)
Bug Fix(es) and Enhancement(s):
* Kernel crash in bpf_for_each_array_elem() due to missing backport of upstream commit 4b6313cf99b0 (JIRA:AlmaLinux-191844)
* gfs2: xfstests generic/363 failure [almalinux-8.10.z] (JIRA:AlmaLinux-214099)
* AlmaLinux8: HYPERV hv_storvsc driver can we add additional code to allow PERSISTENT_RESERVE_IN [AlmaLinux 8.10Z] (JIRA:AlmaLinux-188270)
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-core-4.18.0-553.153.1.rt7.494.el8_10.x86_64.rpm | 45597ae2b2523f8a8737a1d91a42e0804aff58a38ba8781a91056efb810d7a21 |
| x86_64 | kernel-rt-debug-modules-extra-4.18.0-553.153.1.rt7.494.el8_10.x86_64.rpm | 6bbf17f31e8184771c37fdde6f1ea862081a49e467fd72d341355943d4d8d17f |
| x86_64 | kernel-rt-4.18.0-553.153.1.rt7.494.el8_10.x86_64.rpm | 6fbc2156be6d472e199e0e9b47ac9e00ac7521670389d4c9f7874a0b3986a5fb |
| x86_64 | kernel-rt-debug-modules-4.18.0-553.153.1.rt7.494.el8_10.x86_64.rpm | 701576e6594c58c2e28bf740ca866d1fa2c675c538b70ccca04d97e234a63451 |
| x86_64 | kernel-rt-debug-core-4.18.0-553.153.1.rt7.494.el8_10.x86_64.rpm | 7d1c555cfd9e874aefb18bd25282da7775f30bae91a0e792ec43dd07e4ae2ed4 |
| x86_64 | kernel-rt-modules-4.18.0-553.153.1.rt7.494.el8_10.x86_64.rpm | 7e0a8b547d35bce58d1067b61ee9f0bf71ecadd5ac74d14349b123d54a5e1069 |
| x86_64 | kernel-rt-debug-4.18.0-553.153.1.rt7.494.el8_10.x86_64.rpm | 89a71c0015a4568192baf07d53455c8ee3519ed9a77861704ec56fea8c6eceee |
| x86_64 | kernel-rt-devel-4.18.0-553.153.1.rt7.494.el8_10.x86_64.rpm | f3b0b9998dcaaeef64a1d6b6d4fda2aea003b5d28cb5a10c5784e521ba880288 |
| x86_64 | kernel-rt-modules-extra-4.18.0-553.153.1.rt7.494.el8_10.x86_64.rpm | f861dcb4c6a865f844b861f0e29b129670ea866cf51e08aff43bdb06ce2ed103 |
| x86_64 | kernel-rt-debug-devel-4.18.0-553.153.1.rt7.494.el8_10.x86_64.rpm | f9ff6b9051477d5abe9005a2befe78a71e1f3c17d9a6c3b997d70e7481c31ac5 |
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.
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