Use After Free in Google Android
CVE-2022-20421
In binder_inc_ref_for_node of binder.c, there is a possible way to corrupt memory due to a use after free. 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-239630375References: Upstream kernel
Vulnerability class: Use-After-Free
EPSS: 0.006 (44.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Google Android
- Debian Debian_linux — versions 10.0, 11.0
- N/a Android — versions Android kernel
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@android.com (Patch, Vendor Advisory)
- security@android.com (vendor-advisory, Third Party Advisory)
- security@android.com (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-20421?
- CVE-2022-20421 is a high-severity vulnerability in Google Android, classified under Use After Free. CVSS score: 7.8/10. Published 2022-10-11.
- How severe is CVE-2022-20421?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2022-20421 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.