ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2021-28664

Arm Mali Graphics Processing Unit (GPU) Unspecified Vulnerability

Published May 3, 2021 · catalog updated Jun 16, 2026 · Arm Mali Graphics Processing Unit (GPU)

Patch now

CVE-2021-28664 is in the CISA known-exploited catalog, due Nov 17, 2021. Confirm Arm Mali Graphics Processing Unit (GPU) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High8.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
5.41%
Remediation
Remediation guidance
Affected products
cpe arm/bifrost gpu kernel driver · cpe arm/midgard gpu kernel driver · cpe arm/valhall gpu kernel driver · vendor Arm Mali Graphics Processing Unit (GPU)

The Arm Mali GPU kernel driver allows privilege escalation or a denial of service (memory corruption) because an unprivileged user can achieve read/write access to read-only pages. This affects Bifrost r0p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r8p0 through r30p0 before r31p0.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe arm/bifrost gpu kernel driverversion unspecified
  • cpe arm/midgard gpu kernel driverversion unspecified
  • cpe arm/valhall gpu kernel driverversion unspecified
  • vendor Arm Mali Graphics Processing Unit (GPU)version unspecified

How to fix CVE-2021-28664

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-28664 is in the CISA known-exploited catalog, due Nov 17, 2021. Confirm Arm Mali Graphics Processing Unit (GPU) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 5.41%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 10, 2021 · Catalog

    Detected

    The Arm Mali GPU kernel driver allows privilege escalation or a denial of service (memory corruption) because an unprivileged user can achieve read/write access to read-only pages. This affects Bifrost r0p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r8p0 through r30p0 before r31p0.

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Nov 17, 2021 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    The Arm Mali GPU kernel driver allows privilege escalation or a denial of service (memory corruption) because an unprivileged user can achieve read/write access to read-only pages. This affects Bifrost r0p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r8p0 through r30p0 before r31p0.

Sources

  • CISA KEVConfirmed exploitationCVE-2021-28664

    Arm Mali Graphics Processing Unit (GPU) kernel driver contains an unspecified vulnerability that may allow a non-privileged user to gain write access to read-only memory, gain root privilege, corrupt memory, and modify the memory of other processes.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2021-28664

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-28664

    30-day exploitation probability 5.4%

    first.org
  • NIST NVDVulnerability recordCVE-2021-28664

    The Arm Mali GPU kernel driver allows privilege escalation or a denial of service (memory corruption) because an unprivileged user can achieve read/write access to read-only pages. This affects Bifrost r0p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2021-28664

    Arm Mali Graphics Processing Unit (GPU) kernel driver contains an unspecified vulnerability that may allow a non-privileged user to gain write access to read-only memory, gain root privilege, corrupt memory, and modify the memory of other processes.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.