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Exploited. On CISA's list since 2023-07-07.
CVE-2021-29256 · Arm Mali Graphics Processing Unit (GPU) · Published 2021-05-24
8.8 out of 10
CVSS rates it high.
3.0%
Estimated chance of exploitation in the next 30 days, higher than 87% of all scored flaws (EPSS, 2026-10-29).
Yes
CISA has seen it exploited in real attacks. For US government agencies the fix is deadline passed 1190 days ago (2023-07-28).
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
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.
. 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.
From the NVD.
Explore this week’s weaknesses and all learning topics
Understand the kind of weakness behind this flaw. These resources teach the weakness, rather than reproduce this specific CVE. Follow the vendor's advice above to fix the affected product.
A program uses memory after releasing it, when its contents may belong to something else.
CWE-416 · CISA KEV; NVD record: 134c704f-9b21-4f2e-91b3-4a467353bcc0; NVD record: nvd@nist.gov
Practice labs · Free account. Requires C, pointers and basic binary exploitation; begin with Freebie (Easy).
CWE is a catalogue of weakness types. Labels come from the sources shown and can differ or change. Resource matches reviewed 16 October 2026.
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Exploited flaws from CISA's KEV catalogue. Chance of exploitation from EPSS by FIRST. Descriptions and scores from the NVD. This product uses the NVD API but is not endorsed or certified by the NVD.