Security readout for executives and security teams
Plain-English summary
CVE-2022-20239 is an Android SoC vulnerability where memory mapping behavior could expose kernel memory in an unsafe way. The public record rates it medium severity. Business urgency is mainly for organizations managing Android device fleets, especially devices that may not have received the August 2022 Android security updates.
Executive priority
Treat this as a fleet hygiene and patch assurance issue, not an emergency based on available evidence. Prioritize remediation where Android devices are business-critical, unmanaged, or behind on security patch levels.
Technical view
The record describes unsafe use of remap_pfn_range in Android SoC code. Userspace-controlled VMA page protections may allow mapping beyond intended memory size, potentially including writable kernel memory. The CVSS 3.1 score is 4.2, with high attack complexity, low privileges required, and limited confidentiality and availability impact.
Likely exposure
Exposure is most likely on Android devices using affected Android SoC components that have not received the relevant August 2022 Android security bulletin fixes. The public bundle does not identify specific OEM models, chipsets, or downstream firmware builds.
Exploitation context
The source bundle does not show active exploitation, and the CVE is not listed as KEV. The description suggests userspace influence over memory mapping, but public evidence here is limited and does not provide exploit status, affected device models, or proof-of-concept details.
Researcher notes
The public record is sparse and does not name specific SoCs or code commits. The key technical concern is userspace-controlled memory mapping protection around remap_pfn_range, with possible writable kernel memory exposure. Validate only through vendor advisories, patch metadata, and affected build information.
Mitigation direction
- Review the Android August 2022 security bulletin for vendor guidance.
- Confirm affected Android devices have current OEM security updates installed.
- Prioritize managed devices with outdated Android security patch levels.
- Check OEM or SoC vendor advisories for device-specific fix availability.
Validation and detection
- Inventory Android devices and record security patch levels.
- Identify devices using Android SoC components covered by the bulletin.
- Compare device patch status against August 2022 or later updates.
- Track OEM firmware availability for unsupported or lagging models.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-269: Authorization and privilege behavior lookup
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Open ATT&CK lookupCVE-2022-20239 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L1.62.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.2MediumVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://source.android.com/security/bulletin/2022-08-01CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Privilege Management
Improper Privilege Management represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.