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Vulnerabilities

Vulnerability · CVE-2021-39793

Google Pixel Out-of-Bounds Write Vulnerability

Published Mar 7, 2022 · catalog updated Jun 16, 2026 · Google Pixel

Patch now

CVE-2021-39793 is in the CISA known-exploited catalog, due May 2, 2022. Confirm Google Pixel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.69%
Remediation
Remediation guidance
Affected products
cpe google/android · vendor Google Pixel

In kbase_jd_user_buf_pin_pages of mali_kbase_mem.c, there is a possible out of bounds write due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-210470189References: N/A

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe google/androidversion unspecified
  • vendor Google Pixelversion unspecified

How to fix CVE-2021-39793

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-39793 is in the CISA known-exploited catalog, due May 2, 2022. Confirm Google Pixel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 0.69%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 16, 2022 · Catalog

    Detected

    In kbase_jd_user_buf_pin_pages of mali_kbase_mem.c, there is a possible out of bounds write due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-210470189References: N/A

  2. Apr 11, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 2, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    In kbase_jd_user_buf_pin_pages of mali_kbase_mem.c, there is a possible out of bounds write due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-210470189References: N/A

Sources

  • CISA KEVConfirmed exploitationCVE-2021-39793

    Google Pixel contains a possible out-of-bounds write due to a logic error in the code that could lead to local escalation of privilege.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2021-39793

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-39793

    30-day exploitation probability 0.7%

    first.org
  • NIST NVDVulnerability recordCVE-2021-39793

    In kbase_jd_user_buf_pin_pages of mali_kbase_mem.c, there is a possible out of bounds write due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product:

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2021-39793

    Google Pixel contains a possible out-of-bounds write due to a logic error in the code that could lead to local escalation of privilege.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.