CVE-2021-28663: Arm Mali Graphics Processing Unit (GPU) Use-After-Free Vulnerability
CVE-2021-28663 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2021-11-03
The Arm Mali GPU kernel driver contains a use-after-free vulnerability due to the mishandling of GPU memory operations. This flaw allows a non-privileged user to perform improper operations on GPU memory, potentially leading to local privilege escalation to root or information disclosure.
Yes. CVE-2021-28663 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2021-28663?
Critical severity, with a CVSS score of 8.8, published 3 November 2021.
Which products and versions are affected?
Arm Bifrost GPU Kernel Driver r0p0 through r28p0 before r29p0; Arm Valhall GPU Kernel Driver r19p0 through r28p0 before r29p0; Arm Midgard GPU Kernel Driver r4p0 through r30p0.
Is there a fix for CVE-2021-28663?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2021-28663 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2021-28663?
Check whether you run Arm Mali Graphics Processing Unit (GPU). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Arm Bifrost GPU Kernel Driver r0p0 through r28p0 before r29p0
Arm Valhall GPU Kernel Driver r19p0 through r28p0 before r29p0
Arm Midgard GPU Kernel Driver r4p0 through r30p0
Timeline
2021-05-10: disclosed: NVD Published Date
2021-11-03: kev added: Date added to CISA Known Exploited Vulnerabilities Catalog
2021-11-03: other: Advisory publication date provided in report
2021-11-03: exploited: Reported as exploited in the wild and listed in CISA KEV