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Exploited vulnerability · CISA KEV

Is CVE-2021-28663 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · Arm Mali Graphics Processing Unit (GPU) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-28663, Arm Mali Graphics Processing Unit (GPU) Use-After-Free Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 177 days after it was published. It affects Arm Mali Graphics Processing Unit (GPU). If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 3 Nov 2021
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity8.8CVSS 3.1 · high
US federal due17 Nov 2021BOD 22-01 deadline

What it is

Arm Mali Graphics Processing Unit (GPU) kernel driver contains a use-after-free vulnerability that may allow a non-privileged user to make improper operations on GPU memory to gain root privilege, and/or disclose information.

VendorArm (9 exploited CVEs in KEV)
ProductMali Graphics Processing Unit (GPU)
VulnerabilityArm Mali Graphics Processing Unit (GPU) Use-After-Free Vulnerability
WeaknessCWE-416
Published10 May 2021
Added to KEV3 Nov 2021
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for Mali Graphics Processing Unit (GPU) in your asset inventory, including appliances and cloud images. Stack check lists every exploited Arm CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 10 May 2021.
  4. Get told next time. Email alerts when CISA adds a CVE for Arm.

Other exploited CVEs in Mali Graphics Processing Unit (GPU)

References

Questions

Is CVE-2021-28663 being exploited?

Yes. CISA added CVE-2021-28663 to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-28663 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2021-28663?

Apply updates per vendor instructions. Check Arm's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Mali Graphics Processing Unit (GPU) and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in November 2021 · Arm scorecard · act-now radar.

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