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CVE-2021-28693 Affecting xen package, versions <4.15.0-r1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High

    Threat Intelligence

    EPSS 0.04% (12th percentile)
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NVD
5.5 medium
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SUSE
5.1 medium

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  • Snyk ID SNYK-ALPINE315-XEN-1929388
  • published 10 Jun 2021
  • disclosed 30 Jun 2021
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Introduced: 10 Jun 2021

CVE-2021-28693 Open this link in a new tab

How to fix?

Upgrade Alpine:3.15 xen to version 4.15.0-r1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Alpine. See How to fix? for Alpine:3.15 relevant fixed versions and status.

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.