CVE-2023-20788 Use after free in MT6739, MT6761, MT6765, MT6768, MT6771, MT6779, MT6781, MT6785, MT6833, MT6853, MT6873, MT6877, MT6883, MT8167, MT8167S, MT8168, MT8321, MT8362A, MT8365

Medium 6.4 Published 7 Aug 2023 Updated 21 Oct 2024

A race condition in MediaTek thermal drivers allows local attackers with system privileges to achieve privilege escalation via use-after-free.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-20788?

CVE-2023-20788 is a medium-severity use after free vulnerability in Google Android, published on 7 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In thermal, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07648734; Issue ID: ALPS07648735.

Weakness: CWE-416, CWE-367

Which versions are affected by CVE-2023-20788?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2023-20788?

No fix has been published for CVE-2023-20788 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-2023-20788 being exploited?

There is no known exploitation of CVE-2023-20788 in the wild and no public exploit code.

All Google Android vulnerabilities

Sources

Also known as GHSA-v8vq-x955-wq3q.