CVE-2023-21459 Use after free in Samsung Mobile Devices

What is CVE-2023-21459?

CVE-2023-21459 is a medium-severity use after free vulnerability in Samsung Android, published on 16 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Use after free vulnerability in decon driver prior to SMR Mar-2023 Release 1 allows attackers to cause memory access fault.

Weakness: CWE-416

Which versions are affected by CVE-2023-21459?

It affects 1 product.

Products include Samsung Android.

How do I fix CVE-2023-21459?

No fix has been published for CVE-2023-21459 yet. Limit exposure of the affected software until one is available.

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-2023-21459 being exploited?

There is no known exploitation of CVE-2023-21459 in the wild and no public exploit code.

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-2021-25394 Samsung Mobile Devices Race Condition Exploited Medium 6.4
• CVE-2021-25395 Samsung Mobile Devices Race Condition Exploited Medium 6.4

All Samsung Android vulnerabilities

Sources

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

Also known as GHSA-xfx9-7343-fmvv.