{"id":"CVE-2019-1999","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-1999","generatedAt":"2026-10-27T20:20:04.851Z","title":"In binder_alloc_free_page of binder_alloc.c, there is a possible double free due to improper locking.","description":"In binder_alloc_free_page of binder_alloc.c, there is a possible double free due to improper locking. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-120025196.","published":"2019-02-28T17:29:01.000Z","lastModified":"2026-06-17T02:29:49.000Z","status":"Modified","sourceIdentifier":"security@android.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-415"],"affected":["google/android","debian/debian linux","canonical/ubuntu linux"],"epss":{"score":0.00807,"percentile":0.56562,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2019-02-12","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":46357,"kind":"exploit","title":"Android - binder Use-After-Free of VMA via race Between reclaim and munmap","url":"https://www.exploit-db.com/exploits/46357","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/android/dos/46357.txt","file":"exploits/android/dos/46357.txt","published":"2019-02-12","added":"2019-02-12","updated":"2019-02-12","author":"Google Security Research","type":"dos","platform":"android","port":null,"verified":true,"codes":["CVE-2019-1999"],"tags":"Use After Free (UAF)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1721"}]},"verdict":{"level":"urgent","text":"A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 0.8%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/106851","tags":["Broken Link"],"source":"security@android.com"},{"url":"https://seclists.org/bugtraq/2019/Aug/13","tags":["Mailing List","Third Party Advisory"],"source":"security@android.com"},{"url":"https://source.android.com/security/bulletin/2019-02-01","tags":["Vendor Advisory"],"source":"security@android.com"},{"url":"https://usn.ubuntu.com/3979-1/","tags":["Third Party Advisory"],"source":"security@android.com"},{"url":"https://www.debian.org/security/2019/dsa-4495","tags":["Third Party Advisory"],"source":"security@android.com"},{"url":"https://www.exploit-db.com/exploits/46357/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"security@android.com"},{"url":"http://www.securityfocus.com/bid/106851","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2019/Aug/13","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://source.android.com/security/bulletin/2019-02-01","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3979-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2019/dsa-4495","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/46357/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-1999","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}