Actively exploited · Published Mar 16, 2022 · Assigned by google_android

CVE-2021-39793

High 7.8 Exploited

In plain English

A high-severity out-of-bounds write in Android. Attackers are actively exploiting it in the wild (listed by CISA on April 11, 2022). The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Apply updates per vendor instructions.

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.7%top 47.2% of all CVEs

Exploited in the wildYesCISA KEV since Apr 11, 2022

Attack toolingNoneno public tooling known

CISA guidance

Apply updates per vendor instructions.

Federal agencies must remediate by May 2, 2022.

Official 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 products (as reported)

Vendor	Product	Versions
n/a	Android	Android kernel

Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://source.android.com/security/bulletin/pixel/2022-03-01 x_refsource_MISC
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-39793 government-resource