CVE-2021-39793
Google Pixel Out-of-Bounds Write Vulnerability
- High 7.8
- Exploited: added to CISA KEV 11 Apr 2022
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
Key facts
- Published
- 16 Mar 2022
- Last changed
- 21 Oct 2025
- Assigned by
- google_android
- KEV added
- 11 Apr 2022
- KEV fix due
- 2 May 2022
- EPSS
- 0.685% likely to be exploited in the next 30 days, higher than 53.176% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.8CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | Android |
|
Timeline
- 16 Mar 2022 Published
- 11 Apr 2022 CVE-2021-39793 added to CISA KEV
- 11 Apr 2022 Added to the CISA KEV catalogue