CVEs / CVE-2021-39793
CVE-2021-39793: Google Pixel Out-of-Bounds Write Vulnerability
- Known exploited in the CISA KEV catalog since 11 Apr 2022
- high 7.8 CVSS 3.1 (NVD)
- EPSS 0.68% chance of exploitation in the next 30 days, higher than 52% of CVEs (30 Oct 2026)
- Last changed at its sources
Are you affected? Check your servers with Stackurity: it lists the software on each server and the vulnerabilities to fix first.
Check your servers with Stackurity Already using Stackurity? Search for CVE-2021-39793
Summary
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.
Description
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
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a Android | Android kernel | — |
Exploitation
| In CISA KEV since | 11 Apr 2022 |
|---|---|
| Due date for US federal agencies | 2 May 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-787 |
References
- CVE-2021-39793 on NVD
- CVE-2021-39793 in the CISA KEV catalog
- https://source.android.com/security/bulletin/pixel/2022-03-01 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-39793 Third Party Advisory, US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.