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PatchSiren cyber security CVE debrief

CVE-2021-0920 Android CVE debrief

CVE-2021-0920 is a publicly cataloged Android Kernel race condition vulnerability that CISA added to the Known Exploited Vulnerabilities (KEV) catalog on 2022-05-23. CISA’s required action is to apply updates per vendor instructions, and the official record links to the CVE and NVD detail pages for additional reference.

Vendor
Android
Product
Kernel
CVSS
MEDIUM 6.4
CISA KEV
Listed
Original CVE published
2022-05-23
Original CVE updated
2022-05-23
Advisory published
2022-05-23
Advisory updated
2022-05-23

Who should care

Organizations that manage Android-based devices, fleets, or embedded products using the Android Kernel should prioritize this issue, especially teams responsible for patching and vulnerability response.

Technical summary

The supplied corpus identifies the issue as an Android Kernel race condition vulnerability. No CVSS score, affected version range, impact detail, or reproduction information is included in the provided sources, so the defensible takeaway is limited to its KEV listing and the need to apply vendor updates.

Defensive priority

High — CISA lists this CVE in the Known Exploited Vulnerabilities catalog, which indicates confirmed exploitation risk and warrants prompt remediation.

Recommended defensive actions

  • Review the official CVE and NVD entries for the latest vendor-linked guidance.
  • Apply Android/vendor kernel updates as soon as they are available for your devices.
  • Confirm exposure across all Android-based devices, appliances, and embedded systems you manage.
  • Track OEM and vendor security bulletins for kernel patches relevant to your platform.
  • Validate remediation status and due dates against your internal patch SLAs and the CISA KEV deadline.

Evidence notes

Evidence is limited to the supplied CISA KEV record and its linked official references. The corpus states: vendorProject Android, product Kernel, vulnerability name Android Kernel Race Condition Vulnerability, dateAdded 2022-05-23, dueDate 2022-06-13, and requiredAction "Apply updates per vendor instructions." The record also points to the official NVD page and CVE record. No CVSS or deeper technical impact data was provided in the supplied material.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-0920 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-0920

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2021-0920 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-0920

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.