---
id: "CVE-2021-39793"
kind: "vulnerability"
aliases: ["CVE-2021-39793"]
title: "Google Pixel: Google Pixel Out-of-Bounds Write Vulnerability"
severity: "high"
cvss: 7.8
epss: 0.00685
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Google Pixel", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["android", "exploited", "infrastructure", "mobile", "pixel"]
not_affected_if: ["non-pixel-devices"]
published_at: "2022-03-16T15:15:12+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-39793", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-39793", "first_seen_at": "2026-10-23T19:13:44+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39793", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Google Pixel: Google Pixel Out-of-Bounds Write Vulnerability

Google Pixel phones contain an out-of-bounds write caused by a logic error. A local app or user with some access can use it to gain higher privileges on the device.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Google Pixel affected ? fixed ?

## Fix

Apply the Google Pixel security update per vendor instructions, as CISA requires.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-39793
- 2026-10-23T19:13:44+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2021-39793
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2021-39793

## From the sources

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

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_