{"id":"CVE-2021-29256","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-29256","generatedAt":"2026-10-28T06:35:03.377Z","title":"Arm Mali GPU Kernel Driver Use-After-Free Vulnerability","description":". The Arm Mali GPU kernel driver allows an unprivileged user to achieve access to freed memory, leading to information disclosure or root privilege escalation. This affects Bifrost r16p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r28p0 through r30p0.","published":"2021-05-24T18:15:08.000Z","lastModified":"2026-06-17T03:47:28.000Z","status":"Analyzed","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-416"],"affected":["arm/bifrost gpu kernel driver","arm/midgard gpu kernel driver","arm/valhall gpu kernel driver"],"epss":{"score":0.02988,"percentile":0.87243,"date":"2026-10-27","history":[]},"kev":{"listed":true,"dateAdded":"2023-07-07","dueDate":"2023-07-28","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.\nhttps://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities; https://nvd.nist.gov/vuln/detail/CVE-2021-29256"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 28 July 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-29256","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-29256","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."}