CVE-2021-26934CVSS 7.8

An issue was discovered in the Linux kernel 4.18 through 5.10.16 as used by Xen. The backend allocation (aka be-alloc) mode of the drm_xen_front drivers was not meant to be a supported configuration but this wasn't stated accordingly in its support status entry.

Published
February 25, 2021
Last Modified
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🔗 CVE IDs covered (1)

CVE-2021-26934 →

📋 Description

Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability? One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.

🎯 Affected products16

  • kernel-5.10.57.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARM
  • kernel-5.10.57.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64
  • kernel-debuginfo-5.10.57.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARM
  • kernel-debuginfo-5.10.57.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64
  • kernel-devel-5.10.57.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARM
  • kernel-devel-5.10.57.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64
  • kernel-docs-5.10.57.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARM
  • kernel-docs-5.10.57.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64
  • kernel-drivers-accessibility-5.10.57.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARM
  • kernel-drivers-accessibility-5.10.57.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64
  • kernel-drivers-sound-5.10.57.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARM
  • kernel-drivers-sound-5.10.57.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64
  • kernel-dtb-5.10.57.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARM
  • kernel-oprofile-5.10.57.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64
  • kernel-tools-5.10.57.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARM
  • kernel-tools-5.10.57.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build -

🔗 References (2)