CISA KEV · Known exploitedHigh

CVE-2021-29256

Arm Mali Graphics Processing Unit (GPU)

. 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.

CVSS
8.8
EPSS
3.02%
86.1% percentile
CISA KEV
Listed
Published
2021.05.25
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability3.02%
Technical severityCVSS 8.8

Vulnerability overview

. 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 product and versions

Product
Arm Mali Graphics Processing Unit (GPU)
Affected versions
>= r16p0 < r30p0, >= r28p0 < r31p0, >= r19p0 < r30p0
Fixed versions
r30p0, r31p0

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

Due date: 2023.07.28
  1. 1
    Identify

    Confirm that Arm Mali Graphics Processing Unit (GPU) and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
KEV added
2023.07.07
Ransomware use
미확인
CVE-2021-29256 — Arm Mali Graphics Processing Unit (GPU) | SECUFOCUS NOW