{"cve":"CVE-2021-28664","nvd":{"published":"2021-05-10T15:15:07.590","modified":"2026-06-17T03:46:43.977","status":"Analyzed","description":"The Arm Mali GPU kernel driver allows privilege escalation or a denial of service (memory corruption) because an unprivileged user can achieve read/write access to read-only pages. This affects Bifrost r0p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r8p0 through r30p0 before r31p0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-787"],"references":["https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities","https://developer.arm.com/support/arm-security-updates","https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver","https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities","https://developer.arm.com/support/arm-security-updates"],"products":["arm:bifrost_gpu_kernel_driver","arm:midgard_gpu_kernel_driver","arm:valhall_gpu_kernel_driver"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-28664","score":0.05407,"percentile":0.92689,"date":"2026-10-31"},"kev":{"cve":"CVE-2021-28664","date_added":"2021-11-03","due_date":"2021-11-17","vendor":"Arm","product":"Mali Graphics Processing Unit (GPU)","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}