Background exploitation KEV catalog
CVE-2021-29256

Arm Mali GPU Kernel Driver Use-After-Free Vulnerability

. 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…

CheckOps priority index
4.8/10 Patch within 7 days
Severity8.8
Probability0.3
Exploitation2/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 3.0% higher than 87.3% of CVEs
CVSS 3.1 8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:
Exploited for 1,216 days 07 Jul 2023
CISA due date 28 Jul 2023 for US federal agencies

Exploitation probability EPSS · FIRST

05010026 Sep06 Oct15 Oct25 Oct03 Nov
EPSS probability (%)Percentile among all CVEs

Exploitation signals 2 / 5

  • KEV catalog (CISA)07 Jul 2023
  • Exploited in EUVD (ENISA)07 Jul 2023
  • Used by ransomwareno
  • EPSS above 10 %3.0%
  • No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

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

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

. 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 products

Mali Graphics Processing Unit (GPU)
Weaknesses (CWE)

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

  1. Published

  2. Exploitation reported (ENISA)

  3. Added to the KEV catalog

  4. CISA remediation due date

References

Other exploited vulnerabilities from the same vendor

  • CVE-2024-4610Arm Mali GPU Kernel Driver Use-After-Free Vulnerability
    4.2 · Background exploitation
  • CVE-2023-4211Arm Mali GPU Kernel Driver Use-After-Free Vulnerability
    3.4 · Background exploitation
  • CVE-2023-26083Arm Mali GPU Kernel Driver Information Disclosure Vulnerability
    2.6 · Background exploitation
  • CVE-2022-38181Arm Mali GPU Kernel Driver Use-After-Free Vulnerability
    5.9 · Background exploitation
  • CVE-2022-22706Arm Mali GPU Kernel Driver Unspecified Vulnerability
    4.4 · Background exploitation
  • CVE-2021-28664Arm Mali Graphics Processing Unit (GPU) Unspecified Vulnerability
    4.9 · Background exploitation

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Sources: CISA KEV · ENISA EUVD · FIRST EPSS · OSV. Public data aggregated by CheckOps, updated automatically. Source texts remain the property of their authors. All exploited vulnerabilities