CVE-2021-28693

描述

xen/arm: Boot modules are not scrubbed The bootloader will load boot modules (e.g. kernel, initramfs...) in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the allocator. Unfortunately, it was discovered that modules will not be scrubbed on Arm.

如何修補 CVE-2021-28693

要修補 CVE-2021-28693,請將受影響套件升級到下列已修補版本。

• —升級至 4.13.3-r1 或更新版本

CVE-2021-28693 正在被利用嗎?

低 — EPSS 為 0.3%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• >= 4.12.0, < 4.13.3-r1

CVSS 分數

參考連結(1)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2021-28693