CVE-2021-1940 Use after free in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

High 8.4 Published 13 Jul 2021 Updated 3 Aug 2024

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

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

What is CVE-2021-1940?

CVE-2021-1940 is a high-severity use after free vulnerability in Qualcomm Aqt1000 Firmware, published on 13 Jul 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Use after free can occur due to improper handling of response from firmware in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

Weakness: CWE-416

Which versions are affected by CVE-2021-1940?

It affects 67 products.

Products include Qualcomm Aqt1000 Firmware, Qualcomm Ar8031 Firmware, Qualcomm Ar8035 Firmware, Qualcomm Csra6620 Firmware, Qualcomm Csra6640 Firmware, Qualcomm Fsm10055 Firmware and 61 more.

How do I fix CVE-2021-1940?

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-2021-1940 being exploited?

There is no known exploitation of CVE-2021-1940 in the wild and no public exploit code.

All Qualcomm Aqt1000 Firmware vulnerabilities

Sources

Also known as 2830334, A-184561360, ASB-A-184561360, GHSA-8m47-h338-9qfh.