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Vulnerabilities

Vulnerability · 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.

Published Oct 11, 2022 · catalog updated Oct 14, 2026 · In binder_inc_ref_for_node of binder.c,

Check if you run it

No confirmed exploitation is on record for CVE-2022-20421. EPSS is 0.63%. Act only if a listed version of In binder_inc_ref_for_node of binder.c, is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (In binder_inc_ref_for_node of binder.c,).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.63%
Remediation
Advisory link
Affected products
cpe debian/debian linux · cpe google/android

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe debian/debian linux10.0
  • cpe debian/debian linux11.0
  • cpe google/androidversion unspecified

How to fix CVE-2022-20421

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2022-20421. EPSS is 0.63%. Act only if a listed version of In binder_inc_ref_for_node of binder.c, is installed.

Which versions are affected?

Compare what you have installed with debian/debian linux 10.0; debian/debian linux 11.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-416: Use After Free. EPSS 0.63%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 11, 2022 · NIST NVD

    Detected

    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

  2. Oct 14, 2026 · NIST NVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2022-20421

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-20421

    30-day exploitation probability 0.6%

    first.org
  • NIST NVDVulnerability recordCVE-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: An

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.