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Vulnerabilities

Vulnerability · CVE-2022-20566

In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking.

Published Dec 16, 2022 · catalog updated Oct 14, 2026 · In l2cap_chan_put of l2cap_core,

Check if you run it

No confirmed exploitation is on record for CVE-2022-20566. EPSS is 0.22%. Act only if a listed version of In l2cap_chan_put of l2cap_core, 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 l2cap_chan_put of l2cap_core,).
  • No version range is stored. A customer cannot check an installed version against this record.
  • 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
0.22%
Remediation
Advisory link
Affected products
cpe google/android

In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking. 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-165329981References: 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 google/androidversion unspecified

How to fix CVE-2022-20566

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-2022-20566. EPSS is 0.22%. Act only if a listed version of In l2cap_chan_put of l2cap_core, is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-416: Use After Free; CWE-667. EPSS 0.22%. 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. Dec 16, 2022 · NIST NVD

    Detected

    In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking. 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-165329981References: Upstream kernel

  2. Oct 14, 2026 · NIST NVD

    Updated

    In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking. 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-165329981References: Upstream kernel

Sources

  • CVE.orgVulnerability recordCVE-2022-20566

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-20566

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2022-20566

    In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAn

    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.