RHSA-2025:11855: Moderate: kernel security update
Published Jul 28, 2025
·Updated
Moderate: kernel security update
Other sources
The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: RDMA/mlx5: Fix pagesize variable overflow (CVE-2025-22091) kernel: ext4: fix out-of-bound read in ext4xattrinodedecrefall() (CVE-2025-22121) kernel: netsched: hfsc: Fix a UAF vulnerability in class handling (CVE-2025-37797) kernel: powerpc/powernv/memtrace: Fix out of bounds issue in memtrace mmap (CVE-2025-38088) kernel: net/mdiobus: Fix potential out-of-bounds clause 45 read/write access (CVE-2025-38110) 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.
— Red Hat
Affected Software
216 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat Enterprise Linux for IBM z Systems
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat CodeReady Linux Builder for ARM 64
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for Power, little endian
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for x86_64
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redhat/kernel-rt<64k-modules-core-6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt<64k-modules-extra-6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-core<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-debug<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-debug-core<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-debug-debuginfo<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-debug-devel<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-debug-modules<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-debug-modules-core<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-debug-modules-extra<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-debuginfo<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-devel<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-modules<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-modules-core<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-rt-modules-extra<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-tools<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-tools-debuginfo<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-tools-libs<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-uki-virt<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-uki-virt-addons<6.12.0-55.24.1.el10_0.aa
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redhat/libperf-debuginfo<6.12.0-55.24.1.el10_0.aa
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redhat/perf<6.12.0-55.24.1.el10_0.aa
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redhat/perf-debuginfo<6.12.0-55.24.1.el10_0.aa
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redhat/python3-perf<6.12.0-55.24.1.el10_0.aa
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redhat/python3-perf-debuginfo<6.12.0-55.24.1.el10_0.aa
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redhat/rtla<6.12.0-55.24.1.el10_0.aa
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redhat/rv<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-cross-headers<6.12.0-55.24.1.el10_0
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redhat/kernel-tools-libs-devel<6.12.0-55.24.1.el10_0
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redhat/libperf<6.12.0-55.24.1.el10_0
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redhat/kernel-cross-headers<6.12.0-55.24.1.el10_0
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redhat/kernel-tools-libs-devel<6.12.0-55.24.1.el10_0
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redhat/libperf<6.12.0-55.24.1.el10_0
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redhat/kernel-cross-headers<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-tools-libs-devel<6.12.0-55.24.1.el10_0.aa
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redhat/libperf<6.12.0-55.24.1.el10_0.aa
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redhat/kernel-cross-headers<6.12.0-55.24.1.el10_0
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redhat/libperf<6.12.0-55.24.1.el10_0
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Remediation
Event History
Jul 28, 2025
Advisory Published
via Red Hat·07:56 AM
Data Sourced
via Red Hat·07:56 AM
DescriptionSeverityAffected Software
May 22, 2026
Advisory Published
via Red Hat·12:10 PM
Data Sourced
via Red Hat·12:10 PM
Remedy
Frequently Asked Questions
1
What is the severity of RHSA-2025:11855?
The severity of RHSA-2025:11855 is classified as moderate.
2
How do I fix RHSA-2025:11855?
To fix RHSA-2025:11855, update the kernel package to version 6.12.0-55.24.1.el10_0.
3
What systems are affected by RHSA-2025:11855?
RHSA-2025:11855 affects various versions of Red Hat Enterprise Linux including x86_64, Power little endian, and ARM 64.
4
What vulnerabilities are addressed in RHSA-2025:11855?
RHSA-2025:11855 addresses vulnerabilities related to page size variable overflow and out-of-bound reads in the kernel.
5
When was RHSA-2025:11855 released?
RHSA-2025:11855 was released to address kernel security vulnerabilities.