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edk2

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EDK2 is the open-source UEFI firmware development framework maintained by the Tianocore project, widely used in BIOS/UEFI implementations across x86 and Arm64 platforms. Recent discussions on WindowsForum highlight critical security vulnerabilities in EDK2, including CVE-2025-2295, an integer overflow in the iSCSI driver that can lead to remote memory exposure, and CVE-2024-38796, a memory corruption bug in the PeCoffLoaderRelocateImage function affecting Azure Linux and potentially other Microsoft products. The tag also covers practical guidance on implementing UEFI Secure Boot on Arm64, noting that while EDK II firmware ports enable Secure Boot, fragmentation across SoCs and vendors creates uneven support. These threads reflect ongoing concerns about firmware security, patching, and enterprise deployment challenges.
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    CVE-2025-2295: EDK2 iSCSI R2T Overflow Causes Firmware Memory Exposure

    A newly published issue in the EDK2 UEFI stack — tracked as CVE-2025-2295 — allows a malicious iSCSI target to craft a specially formed R2T (Ready To Transfer) PDU that can trigger an integer‑overflow condition and cause a BIOS/firmware implementation to read and return out‑of‑bounds memory...
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    EDK II CVE-2024-38796: Azure Linux Attestation and Broader Scope

    The integer‑overflow vulnerability tracked as CVE‑2024‑38796 in the EDK II PeCoffLoaderRelocateImage function is a real, medium‑severity memory‑corruption bug in widely reused UEFI/OVMF firmware code — and while Microsoft has publicly attested that Azure Linux includes the affected open‑source...
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    UEFI Secure Boot on Arm64: Status, Challenges, and Practical Guidance

    UEFI Secure Boot on Arm64 is usable today but fragmented: the essential pieces exist, many mainstream distributions already support it, and a growing set of EDK II UEFI firmware ports make an x86‑like Secure Boot experience possible — yet the practical reality for users and enterprises remains...
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    • aarch64 arm64 boot dbx debian edk2 fedora firmware grub key management linux distributions raspberry pi rhel rk3588 sbat secure boot shim signing ubuntu uefi
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    • Forum: Windows News
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