# CVE-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: AndroidVersions: Android kernelAndroid ID: A-210470189References: N/A

- Page: https://www.vulneraibility.com/cve/CVE-2021-39793
- CVSS: 7.8
- Known exploited: yes, in CISA KEV since 2022-04-11; CISA due date 2022-05-02
- EPSS: 0.69% (percentile 53.1)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-01-29)
- Weakness: CWE-787
- Published: 2022-03-16

## Affected versions

- Android: affected Android kernel

A version outside these ranges is not a statement that it is unaffected.

## References

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

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.