ALAS2023-2025-1189: microcode_ctl security update

ALAS2023-2025-1189, released September 10, 2025, fixes 5 CVEs in microcode_ctl (version 2:2.1-53.amzn2023.0.12). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.8

Base score, 0 to 10

Highest EPSS

0.0043

37th percentile

Priority of the 5 CVEs

Patch now 0
                                Urgent 0
                                High 1
                                Routine 4

Fixed package versions

Product	Release	Fixed in
microcode_ctl	amzn 2023	2:2.1-53.amzn2023.0.12

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2024-28956	kernel-64kb: x86/ibt: Keep IBT disabled during alternative patching (bsc#1242006).	7.8	0.0043	None reported
Routine	CVE-2024-45332	ucode-intel: Exposure of sensitive information caused by shared microarchitectural predictor state that influences transient execu...	5.6	0.0027	None reported
Routine	CVE-2025-20054	ucode-intel: Uncaught exception in the core management mechanism for some Intel Processors may allow an authenticated user to pote...	n/a	0.0019	None reported
Routine	CVE-2025-20103	ucode-intel: Insufficient resource pool in the core management mechanism for some Intel Processors may allow an authenticated user...	n/a	0.0018	None reported
Routine	CVE-2025-20109	ucode-intel: Improper Isolation or Compartmentalization in the stream cache mechanism for some Intel Processors may allow an authe...	n/a	0.0015	None reported

Also fixes CVE-2024-28956

ELSA-2025-20480
kernel-uek, kernel-uek-core, kernel-uek-debug and 32 more on ol 10, ol 9
SUSE-SU-2025:01919-1
kernel-coco, kernel-coco_debug, kernel-source-coco and 1 more on sles 15.6
SUSE-SU-2025:01967-1
kernel-azure, kernel-source-azure, kernel-syms-azure on sles 15.7
SUSE-SU-2025:01951-1
kernel-64kb, kernel-default, kernel-default-base and 6 more on sles 15.7
SUSE-SU-2025:01964-1
kernel-livepatch-SLE15-SP6-RT_Update_11, kernel-rt, kernel-rt_debug and 2 more on opensuse-leap 15.6, sles 15.6
SUSE-SU-2025:01614-1
dtb-aarch64, kernel-64kb, kernel-debug and 10 more on opensuse-leap 15.6, sles 15.6
SUSE-SU-2025:01972-1
kernel-livepatch-SLE15-SP7-RT_Update_1 on sles 15.7
RHSA-2025:20095
kernel on RHEL 10

Vendor advisory

https://alas.aws.amazon.com/AL2023/ALAS-2025-1189.html

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