Known exploited vulnerability
CVE-2021-28663
The short answer
CVE-2021-28663 affects n/a n/a and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first.
What it is
The Arm Mali GPU kernel driver allows privilege escalation or information disclosure because GPU memory operations are mishandled, leading to a use-after-free. This affects Bifrost r0p0 through r28p0 before r29p0, Valhall r19p0 through r28p0 before r29p0, and Midgard r4p0 through r30p0.
Weakness: CWE-416.
Severity
8.8 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Nov 3, 2021
Federal due date Nov 17, 2021
EPSS, next 30 days
12%
Higher than 96% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
n/a, bifrost_gpu_kernel_driver, valhall_gpu_kernel_driver, midgard_gpu_kernel_driver. NVD's record lists the exact affected versions.
References
- developer.arm.com/support/arm-security-updates Vendor Advisory
- developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver Vendor Advisory
- github.com/lntrx/CVE-2021-28663 Exploit
- developer.arm.com/support/arm-security-updates Vendor Advisory
- developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver Vendor Advisory
- github.com/lntrx/CVE-2021-28663 Exploit
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28663 US Government Resource
Questions
Is CVE-2021-28663 being exploited?
Yes. CISA added CVE-2021-28663 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2021-11-17.
How do I fix CVE-2021-28663?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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