Vulnerability Description
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
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 5.13 |
| Android | - | |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlMailing ListThird Party Advisory
- https://source.android.com/security/bulletin/2021-11-01Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlMailing ListThird Party Advisory
- https://source.android.com/security/bulletin/2021-11-01Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-Third Party AdvisoryUS Government Resource
FAQ
What is CVE-2021-0920?
CVE-2021-0920 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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 interact...
How severe is CVE-2021-0920?
CVE-2021-0920 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-0920?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Google Android, Debian Debian Linux.