{"id":"CVE-2023-21401","aliases":["A-305091236","ASB-A-305091236","EUVD-2023-25569","GHSA-q73m-hf29-h8q4"],"status":"published","title":"There is elevation of privilege.","description":"In DevmemIntChangeSparse of devicemem_server.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00446,"percentile":0.39089,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2023-12-01T00:00:00Z","modified":"2026-11-05T16:32:28Z","fixes":[{"ecosystem":"Android","package":":unknown:","fixed_in":["SoCVersion:2023-12-05"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":":unknown:","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"SoCVersion:0"},{"fixed":"SoCVersion:2023-12-05"}]}],"versions":["SoCVersion"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/2023-12-01","tags":["x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-21401"},{"url":"https://github.com/advisories/GHSA-q73m-hf29-h8q4"}],"sources":{"cve":[{"id":"CVE-2023-21401","description":"In DevmemIntChangeSparse of devicemem_server.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2023-12-04T22:40:49.129Z","modified":"2024-12-02T17:34:38.257Z","updated_at":"2026-11-02T14:35:20.368244Z"}],"euvd":[{"id":"EUVD-2023-25569","description":"In DevmemIntChangeSparse of devicemem_server.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2023-12-04T22:40:49Z","modified":"2024-12-02T17:34:38Z","updated_at":"2026-11-03T00:04:43.613884Z"}],"ghsa":[{"id":"GHSA-q73m-hf29-h8q4","title":"There is elevation of privilege.","description":"There is elevation of privilege.","status":"published","published":"2023-12-05T00:31:07Z","modified":"2023-12-07T21:31:12Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T14:55:09.695365Z"}],"nvd":[{"id":"CVE-2023-21401","description":"In DevmemIntChangeSparse of devicemem_server.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2023-12-04T23:15:22.97Z","modified":"2026-06-17T05:32:30.937Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"updated_at":"2026-11-02T14:08:52.544469Z"}],"osv":[{"id":"ASB-A-305091236","description":"In DevmemIntChangeSparse of devicemem_server.c, there is a possible out of\n    bounds write due to an integer overflow. This could lead to local escalation\n    of privilege in the kernel with no additional execution privileges needed.\n    User interaction is not needed for exploitation.","status":"published","published":"2023-12-01T00:00:00Z","modified":"2026-11-10T17:02:23.040266809Z","updated_at":"2026-11-10T17:35:06.383013Z"}]}}