# CVE-2021-0920

In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel

- Page: https://www.vulneraibility.com/cve/CVE-2021-0920
- CVSS: 6.4
- Known exploited: yes, in CISA KEV since 2022-05-23; CISA due date 2022-06-13
- EPSS: 0.87% (percentile 59.2)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2024-02-06)
- Weakness: CWE-416
- Published: 2021-12-15

## 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/2021-11-01
- [other] https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-0920

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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.