CVE-2021-1947 Use after free in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

High 8.4 Published 17 Sep 2021 Updated 3 Aug 2024

A use-after-free in the Qualcomm kernel graphics driver allows attackers to execute arbitrary code or escalate privileges on Snapdragon devices.

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-2021-1947?

CVE-2021-1947 is a high-severity use after free vulnerability in Qualcomm Apq8009w Firmware, published on 17 Sep 2021. 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 kernel graphics driver because of storing an invalid pointer in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

Weakness: CWE-416

Which versions are affected by CVE-2021-1947?

It affects 87 products.

Products include Qualcomm Apq8009w Firmware, Qualcomm Apq8053 Firmware, Qualcomm Ar9380 Firmware, Qualcomm Ipq8064 Firmware, Qualcomm Ipq8065 Firmware, Qualcomm Ipq8068 Firmware and 81 more.

How do I fix CVE-2021-1947?

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-2021-1947 being exploited?

There is no known exploitation of CVE-2021-1947 in the wild and no public exploit code.

All Qualcomm Apq8009w Firmware vulnerabilities

Sources

Also known as 2840102, A-187074483, ASB-A-187074483, GHSA-7q63-mgr2-2p5j.