CVE-2021-25394 Samsung Mobile Devices Race Condition

What is CVE-2021-25394?

CVE-2021-25394 is a medium-severity use after free vulnerability in Samsung Android, published on 11 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A use after free vulnerability via race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows arbitrary write given a radio privilege is compromised.

Weakness: CWE-362, CWE-416

Which versions are affected by CVE-2021-25394?

It affects 1 product.

Products include Samsung Android.

How do I fix CVE-2021-25394?

No fix has been published for CVE-2021-25394 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 20 Jul 2023.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2021-25394 being exploited?

Yes. Attackers have exploited CVE-2021-25394 in the wild since at least 29 Jun 2023.

Other vulnerabilities in Samsung Android

• CVE-2025-21042 Samsung Mobile Devices Out-of-Bounds Write Exploited High 8.8
• CVE-2025-21043 Samsung Mobile Devices Out-of-Bounds Write Exploited High 8.8
• CVE-2021-25487 Samsung Mobile Devices Out-of-Bounds Read Exploited High 7.3
• CVE-2021-25395 Samsung Mobile Devices Race Condition Exploited Medium 6.4
• CVE-2021-25369 Samsung Mobile Devices Improper Access Control Exploited Medium 6.2

All Samsung Android vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-v32f-c32x-pgfp.