CVE-2021-35120 Use after free in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile

Medium 6.7 Published 14 Jun 2022 Updated 4 Aug 2024

A use-after-free vulnerability in Qualcomm Snapdragon firmware allows attackers to execute arbitrary code or escalate privileges via improper handle management.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2021-35120?

CVE-2021-35120 is a medium-severity use after free vulnerability in Qualcomm Apq8053 Firmware, published on 14 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Improper handling between export and release functions on the same handle from client can lead to use after free in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile

Weakness: CWE-416

Which versions are affected by CVE-2021-35120?

It affects 100 products.

Products include Qualcomm Apq8053 Firmware, Qualcomm Aqt1000 Firmware, Qualcomm Ar8031 Firmware, Qualcomm Ar8035 Firmware, Qualcomm Csra6620 Firmware, Qualcomm Csra6640 Firmware and 94 more.

How do I fix CVE-2021-35120?

Apply the vendor's patch.

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-2021-35120 being exploited?

There is no known exploitation of CVE-2021-35120 in the wild and no public exploit code.

All Qualcomm Apq8053 Firmware vulnerabilities

Sources

Also known as 3014911, A-209481085, GHSA-mmmm-x7ch-cx6q, PUB-A-209481085.