UBUNTU-CVE-2021-47018

Advisory lineage Upstream: 1 Downstream: 0

Upstream

CVE-2021-47018

Published: 28 Feb 2024, 09:15

Last modified:24 Oct 2025, 04:50

Vulnerability Summary

Overall Risk (default)

low

22/100

CVSS Score

5.5 MEDIUM

3.1 (osv_ubuntu)

EPSS Score

No data

KEV

Not listed

Ransomware

No reports

Public exploits

None found

Dark Web

Not detected

Timeline

28 Feb 2024, 09:15

Published

Vulnerability first disclosed

24 Oct 2025, 04:50

Last Modified

Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/64: Fix the definition of the fixmap area At the time being, the fixmap area is defined at the top of the address space or just below KASAN. This definition is not valid for PPC64. For PPC64, use the top of the I/O space. Because of circular dependencies, it is not possible to include asm/fixmap.h in asm/book3s/64/pgtable.h , so define a fixed size AREA at the top of the I/O space for fixmap and ensure during build that the size is big enough.

CVSS Metrics

v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Systems

ubuntu•linux-allwinner-5.19
all
ubuntu•linux-aws-5.0
all
ubuntu•linux-aws-5.11
all
ubuntu•linux-aws-5.13
all
ubuntu•linux-aws-5.19
all
ubuntu•linux-aws-5.3
all
ubuntu•linux-aws-5.8
all
ubuntu•linux-aws-6.2
all
ubuntu•linux-azure
all
ubuntu•linux-azure-5.11
all
ubuntu•linux-azure-5.13
all
ubuntu•linux-azure-5.19
all
ubuntu•linux-azure-5.3
all
ubuntu•linux-azure-5.8
all
ubuntu•linux-azure-6.2
all
ubuntu•linux-azure-edge
all
ubuntu•linux-azure-fde
all
ubuntu•linux-azure-fde-5.19
all
ubuntu•linux-azure-fde-6.2
all
ubuntu•linux-gcp
all
ubuntu•linux-gcp-5.11
all
ubuntu•linux-gcp-5.13
all
ubuntu•linux-gcp-5.19
all
ubuntu•linux-gcp-5.3
all
ubuntu•linux-gcp-5.8
all
ubuntu•linux-gcp-6.2
all
ubuntu•linux-gke
all
ubuntu•linux-gke-4.15
all
ubuntu•linux-gke-5.15
all
ubuntu•linux-gke-5.4
all
ubuntu•linux-gkeop-5.4
all
ubuntu•linux-hwe
all
ubuntu•linux-hwe-5.11
all
ubuntu•linux-hwe-5.13
all
ubuntu•linux-hwe-5.19
all
ubuntu•linux-hwe-5.8
all
ubuntu•linux-hwe-6.2
all
ubuntu•linux-hwe-edge
all | all
ubuntu•linux-intel-5.13
all
ubuntu•linux-lowlatency-hwe-5.19
all
ubuntu•linux-lowlatency-hwe-6.2
all
ubuntu•linux-nvidia-6.2
all
ubuntu•linux-oem
all
ubuntu•linux-oem-5.10
all
ubuntu•linux-oem-5.13
all
ubuntu•linux-oem-5.14
all
ubuntu•linux-oem-5.17
all
ubuntu•linux-oem-5.6
all
ubuntu•linux-oem-6.0
all
ubuntu•linux-oem-6.1
all

Showing first 50 affected entries in server-rendered view.