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Exploited vulnerability · CISA KEV

Is CVE-2021-29256 exploited? Yes: in CISA KEV since 7 Jul 2023

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

Yes. CVE-2021-29256, Arm Mali GPU Kernel Driver Use-After-Free Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 7 Jul 2023, 774 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 or discontinue use of the product if updates are unavailable.

exploitedYesCISA KEV · 7 Jul 2023
ransomwareNot knownno confirmed use
EPSSbelow top 10%lower predicted activity right now (it is still confirmed exploited)
severity8.8CVSS 3.1 · high
US federal due28 Jul 2023BOD 22-01 deadline

What it is

Arm Mali GPU Kernel Driver contains a use-after-free vulnerability that may allow a non-privileged user to gain root privilege and/or disclose information.

VendorArm (9 exploited CVEs in KEV)
ProductMali Graphics Processing Unit (GPU)
VulnerabilityArm Mali GPU Kernel Driver Use-After-Free Vulnerability
WeaknessCWE-416
Published24 May 2021
Added to KEV7 Jul 2023
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 or discontinue use of the product if updates are unavailable.
  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 24 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-2021-29256 being exploited?

Yes. CISA added CVE-2021-29256 to the Known Exploited Vulnerabilities catalog on 7 Jul 2023, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-29256 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-2021-29256?

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable. 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 July 2023 · Arm scorecard · act-now radar.

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