{"id":"CVE-2021-39803","aliases":["A-193790350","ASB-A-193790350","EUVD-2021-26160","GHSA-rpq4-mrj2-p6qj"],"status":"published","title":"In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free....","description":"In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00649,"percentile":0.51467,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125","CWE-416"],"published":"2022-04-01T00:00:00Z","modified":"2026-11-05T16:32:28Z","fixes":[{"ecosystem":"Android","package":"platform/frameworks/av","fixed_in":["10:2022-04-01","11:2022-04-01","12:2022-04-01","12L:2022-04-01"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":"platform/frameworks/av","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2022-04-01"}]}],"versions":["10"]},{"source":"osv","ecosystem":"Android","package":"platform/frameworks/av","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11:0"},{"fixed":"11:2022-04-01"}]}],"versions":["11"]},{"source":"osv","ecosystem":"Android","package":"platform/frameworks/av","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"12:0"},{"fixed":"12:2022-04-01"}]}],"versions":["12"]},{"source":"osv","ecosystem":"Android","package":"platform/frameworks/av","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"12L:0"},{"fixed":"12L:2022-04-01"}]}],"versions":["12L"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/2022-04-01","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39803"},{"url":"https://github.com/advisories/GHSA-rpq4-mrj2-p6qj"},{"url":"https://android.googlesource.com/platform/frameworks/av/+/4b93da988f02c652f3429661f9a9859fa1c1ea0a","tags":["fix"]}],"sources":{"cve":[{"id":"CVE-2021-39803","description":"In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350","status":"published","published":"2022-04-12T16:11:46Z","modified":"2024-08-04T02:20:33.321Z","updated_at":"2026-11-02T14:33:09.175141Z"}],"euvd":[{"id":"EUVD-2021-26160","description":"In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350","status":"published","published":"2022-04-12T16:11:46Z","modified":"2024-08-04T02:20:33Z","updated_at":"2026-11-03T03:24:22.263982Z"}],"ghsa":[{"id":"GHSA-rpq4-mrj2-p6qj","title":"In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free....","description":"In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350","status":"published","published":"2022-04-13T00:00:26Z","modified":"2023-01-27T05:01:33Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:41:55.318028Z"}],"nvd":[{"id":"CVE-2021-39803","description":"In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350","status":"published","published":"2022-04-12T17:15:08.457Z","modified":"2026-06-17T04:04:11.047Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:07:06.029737Z"}],"osv":[{"id":"ASB-A-193790350","description":"In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.","status":"published","published":"2022-04-01T00:00:00Z","modified":"2026-11-09T16:40:10.884737887Z","updated_at":"2026-11-09T17:04:22.742827Z"}]}}