{"cve_id":"CVE-2021-28663","published":"2021-05-10T15:15:07.557000+00:00","last_modified":"2026-06-17T03:46:43.793000+00:00","vuln_status":"Analyzed","description":"The Arm Mali GPU kernel driver allows privilege escalation or information disclosure because GPU memory operations are mishandled, leading to a use-after-free. This affects Bifrost r0p0 through r28p0 before r29p0, Valhall r19p0 through r28p0 before r29p0, and Midgard r4p0 through r30p0.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","base_score":8.8,"base_severity":"HIGH","attack_vector":"NETWORK","privileges_req":"LOW","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-416"],"in_kev":true,"kev_date_added":"2021-11-03","kev_ransomware":false,"epss_score":0.12084,"epss_percentile":0.96145,"cap_rule_version":"0.1.1","stage":"EXECUTION","req_access":"USER","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T09:41:33.892865+00:00","first_seen":"2021-05-10T15:15:07.557000+00:00","kev_first_seen":"2021-11-03T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["arm"],"products":["bifrost_gpu_kernel_driver","midgard_gpu_kernel_driver","valhall_gpu_kernel_driver"],"affected":[{"vendor":"arm","product":"bifrost_gpu_kernel_driver","ranges":["≥ r0p0 and < r29p0"]},{"vendor":"arm","product":"midgard_gpu_kernel_driver","ranges":["≥ r4p0 and < r31p0"]},{"vendor":"arm","product":"valhall_gpu_kernel_driver","ranges":["≥ r19p0 and < r29p0"]}]}