{"id":"CVE-2022-20566","title":"In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking","summary":"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…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416","CWE-667","CWE-416","CWE-667"],"vendor":"google","product":"android","affected":["android"],"published":"2022-12-16","updated":"2026-10-14","sourceUpdated":"2026-10-14T16:17:22.733","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-20566","references":[{"url":"https://source.android.com/security/bulletin/pixel/2022-12-01","label":"security@android.com"},{"url":"https://source.android.com/security/bulletin/pixel/2022-12-01","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-794697.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.00204,"epssPercentile":0.09643,"ingestedAt":"2026-10-14T16:40:32.048Z","slug":"CVE-2022-20566","body":"## Overview\n\nIn 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\n\n## Affected\n\n- `android`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}