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kernel: mm/compaction: fix UBSAN shift-out-of-bounds warning

🗓️ 26 Jan 2026 16:39:04Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 16 Views

Fix UBSAN shift-out-of-bounds warning in memory management to prevent integer overflow, instability, and denial of service.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.0aarch64kernel6.12.0-55.55.1.el10_0kernel-6.12.0-55.55.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0ppc64lekernel6.12.0-55.55.1.el10_0kernel-6.12.0-55.55.1.el10_0.ppc64le.rpm
Red Hat Enterprise Linux10.0s390xkernel6.12.0-55.55.1.el10_0kernel-6.12.0-55.55.1.el10_0.s390x.rpm
Red Hat Enterprise Linux10.0x86_64kernel6.12.0-55.55.1.el10_0kernel-6.12.0-55.55.1.el10_0.x86_64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k6.12.0-55.55.1.el10_0kernel-64k-6.12.0-55.55.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-core6.12.0-55.55.1.el10_0kernel-64k-core-6.12.0-55.55.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug6.12.0-55.55.1.el10_0kernel-64k-debug-6.12.0-55.55.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug-core6.12.0-55.55.1.el10_0kernel-64k-debug-core-6.12.0-55.55.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug-debuginfo6.12.0-55.55.1.el10_0kernel-64k-debug-debuginfo-6.12.0-55.55.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug-devel6.12.0-55.55.1.el10_0kernel-64k-debug-devel-6.12.0-55.55.1.el10_0.aarch64.rpm
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04 Aug 2026 14:07Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.17.1
EPSS0.00193
16