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OpenAdvisories
Unscored CVE-2021-30178 EUVD-2021-17114GHSA-5qhm-686w-6256

An issue was discovered in the Linux kernel through 5.11.11. synic_get in arch/x86/kvm/hyperv.c has a NULL pointer dereference for certain …

Published Apr 6, 2021 · Updated Aug 3, 2024 · Assigned by mitre

Package: kernel Package: linux-aws-5.0 Package: linux-aws-5.3 Package: linux-azure Package: linux-azure-5.3 Package: linux-azure-edge Package: linux-gcp Package: linux-gcp-5.3 Package: linux-gcp-edge Package: linux-gke-4.15 Package: linux-hwe Package: linux-hwe-edge Package: linux-oem Package: linux-oracle-5.0 Package: linux-oracle-5.3 Package: linux-raspi2 Package: linux-riscv Ecosystem: Azure Linux Ecosystem: Ubuntu

Description

An issue was discovered in the Linux kernel through 5.11.11. synic_get in arch/x86/kvm/hyperv.c has a NULL pointer dereference for certain accesses to the SynIC Hyper-V context, aka CID-919f4ebc5987.

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 20.04 LTS linux-riscv +1 No fix yet —
Ubuntu 18.04 LTS linux-gcp +13 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 2 (CBL-Mariner) kernel 5.10.78.1-1 —

Advisories 1

References