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cve 2025 22045

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CVE-2025-22045 is a Linux kernel vulnerability in the x86 memory management code, specifically affecting how flush_tlb_range() handles PMD entries during page table operations. The bug was fixed upstream by aligning x86 behavior with the arm64 model to prevent incorrect last-level TLB invalidation optimizations. Microsoft's MSRC confirmed that Azure Linux includes the affected open-source library and is potentially vulnerable. Discussions on WindowsForum highlight the cross-product implications, noting that while Microsoft's statement is authoritative for Azure Linux, it does not guarantee that other Microsoft products are unaffected. Users should monitor official advisories and apply kernel updates as they become available.
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    Azure Linux Attestation and CVE-2025-22045: Cross-Product Kernel Risks

    Microsoft’s concise MSRC wording — “Azure Linux includes this open‑source library and is therefore potentially affected by this vulnerability” — is an authoritative, product‑level attestation for Azure Linux, but it is not a technical guarantee that no other Microsoft product could include the...
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    • azure linux cve 2025 22045 kernel security vex csaf
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    • Forum: Security Alerts
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