synced 3 MIN AGO
01 Record

CVE-2022-20239

remap_pfn_range' here may map out of size kernel memory (for example, may map the kernel area), and because the 'vma->vm_page_prot' can also be controlled by userspace, so userspace may map the kernel

MediumPUBLISHEDCNA: google_android
CNA base score4.2 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L

02 Description

remap_pfn_range' here may map out of size kernel memory (for example, may map the kernel area), and because the 'vma->vm_page_prot' can also be controlled by userspace, so userspace may map the kernel

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.29% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 22.4% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-08-09 20:20Z4 YR AGO
Last updated
2025-10-20 17:53Z1 YR AGO
Reserved
2021-10-14
Assigning CNA
google_android
Record state
PUBLISHED
Severity
Medium (CVSS 4.2)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L
Weaknesses
  • CWE-269Improper Privilege ManagementClass
  • CWE-610Externally Controlled Reference to a Resource in Another SphereClass
Data version
5.1
Document digest
2d69bc7345c6f31ece718a5e6fc5226f2f4c9a1b8bc6dc618ee56c5763379847

05 Affected products

VendorProductVersionsPlatforms
n/aAndroidAndroid SoC—

06 References