CVEs / CVE-2021-29256
CVE-2021-29256: Arm Mali GPU Kernel Driver Use-After-Free Vulnerability
- Known exploited in the CISA KEV catalog since 7 Jul 2023
- high 8.8 CVSS 3.1 (NVD)
- EPSS 2.98% chance of exploitation in the next 30 days, higher than 87% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Arm Mali GPU Kernel Driver contains a use-after-free vulnerability that may allow a non-privileged user to gain root privilege and/or disclose information.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
| In CISA KEV since | 7 Jul 2023 |
|---|---|
| Due date for US federal agencies | 28 Jul 2023 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions or discontinue use of the product if updates are unavailable. |
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-416 |
References
- CVE-2021-29256 on NVD
- CVE-2021-29256 in the CISA KEV catalog
- https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities (cited by CISA)
- https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-29256 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.