{"id":"CVE-2022-20421","title":"In binder_inc_ref_for_node of binder.c, there is a possible way to corrupt memory due to a use after free","summary":"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 fo…","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"],"vendor":"google","product":"android","affected":["android","debian_linux = 10.0","debian_linux = 11.0"],"published":"2022-10-11","updated":"2026-10-14","sourceUpdated":"2026-10-14T15:16:59.690","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-20421","references":[{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html","label":"security@android.com"},{"url":"https://source.android.com/security/bulletin/2022-10-01","label":"security@android.com"},{"url":"https://www.debian.org/security/2022/dsa-5257","label":"security@android.com"},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://source.android.com/security/bulletin/2022-10-01","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2022/dsa-5257","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-770721.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-794697.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-831302.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","exploit-available","cve.org"],"epss":0.00625,"epssPercentile":0.49742,"exploits":{"github":2,"githubRepos":["https://github.com/0xkol/badspin","https://github.com/sandiyochristan/oo"],"checkedAt":"2026-10-27T16:40:15.167Z"},"exploitAvailable":true,"ingestedAt":"2026-10-14T15:36:13.919Z","slug":"CVE-2022-20421","body":"## Overview\n\nIn 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\n\n## Affected\n\n- `android`\n- `debian_linux = 10.0`\n- `debian_linux = 11.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}