CVE-2021-29256 (GCVE-0-2021-29256)

Vulnerability from cvelistv5 – Published: 2021-05-24 17:56 – Updated: 2025-10-21 23:25
VLAI? CISA KEV
Summary
. 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.
Severity ?
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 9a30e9ca-de9d-4a11-a5bd-85f31674b88e

Vulnerability ID: CVE-2021-29256

Status: Confirmed

Status Updated: 2023-07-07 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-07-07
Asserted: 2023-07-07
Scope
Notes: KEV entry: Arm Mali GPU Kernel Driver Use-After-Free Vulnerability | Affected: Arm / Mali Graphics Processing Unit (GPU) | Description: 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. | Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable. | Due date: 2023-07-28 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities; https://nvd.nist.gov/vuln/detail/CVE-2021-29256
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-416
Feed CISA Known Exploited Vulnerabilities Catalog
Product Mali Graphics Processing Unit (GPU)
Due Date 2023-07-28
Date Added 2023-07-07
Vendorproject Arm
Vulnerabilityname Arm Mali GPU Kernel Driver Use-After-Free Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:26 UTC | Updated: 2026-02-02 12:26 UTC
Show details on NVD website
To clipboard 

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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.