CVE-2021-38198 — Incorrect Permission Assignment in Kernel

CWE-732 — Incorrect Permission Assignment16 documents7 sources
Severity
5.5MEDIUMNVD
OSV7.8OSV6.5
EPSS
0.1%
top 76.57%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Linux KernelDebian LinuxDebian Linux+2 more
Timeline
PublishedAug 8
Latest updateMay 24

Description

arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages6 packages

▶NVDlinux/linux_kernel< 5.12.11
▶Debianlinux/linux_kernel< 5.10.46-1+3
▶Ubuntulinux/linux_kernel< 4.15.0-161.169+2
▶debiandebian/linux< linux 5.10.46-1 (bookworm)

Also affects: Debian Linux 9.0

Patches

Patch: cdn.kernel.org ↗Patch: github.com ↗Patch: cdn.kernel.org ↗

🔴Vulnerability Details

7
GHSA
GHSA-4wvg-hh97-h3gv: arch/x86/kvm/mmu/paging_tmpl↗2022-05-24
▶
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities↗2022-03-22
▶
OSV
linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-ibm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-↗2021-10-22
▶
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities↗2021-10-22
▶
OSV
linux, linux-bluefield, linux-gcp-5.4, linux-hwe-5.4, linux-kvm vulnerabilities↗2021-10-20
▶

📋Vendor Advisories

8
Ubuntu
Linux kernel vulnerabilities↗2022-03-22
▶
Ubuntu
Linux kernel vulnerabilities↗2021-10-22
▶
Ubuntu
Linux kernel vulnerabilities↗2021-10-22
▶
Ubuntu
Linux kernel vulnerabilities↗2021-10-20
▶
Ubuntu
Linux kernel vulnerabilities↗2021-09-08
▶
CVE-2021-38198 — Incorrect Permission Assignment | cvebase