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CVE-2024-41031 is a Linux kernel memory-management flaw in mm/filemap affecting ARM64 systems configured with 64 KB base pages. In this configuration, the PMD huge-page order is 13, and mm/filemap can attempt to create a PMD-sized page-cache entry that exceeds the maximum order supported by the xarray implementation. The condition can trigger an xarray allocation warning during huge-page splitting and page-cache truncation, including activity reached through XFS file-allocation operations. The upstream fix prevents creation of PMD-sized page-cache entries when their size exceeds MAX_PAGECACHE_ORDER and uses the normal readahead path instead.
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A Linux kernel memory-management flaw affecting ARM64 configurations with 64 KB base pages. Attempting to create PMD-sized page-cache entries larger than MAX_PAGECACHE_ORDER can trigger an xarray warning and availability impact; the fix falls back to the regular readahead path.
Linux kernel filemap page-cache allocation issue involving PMD-sized pages.
A Linux kernel memory-management/filemap issue involving creation of PMD-sized page cache.
Linux kernel filemap page-cache handling issue involving creation of PMD-sized page cache.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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