CVE-2021-35071 Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

Medium 5.5 Published 14 Jun 2022 Updated 4 Aug 2024

A buffer over-read in Qualcomm Snapdragon firmware allows attackers to cause a denial of service by exploiting missing size validation during data copying.

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

What is CVE-2021-35071?

CVE-2021-35071 is a medium-severity memory corruption vulnerability in Qualcomm Aqt1000 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

Possible buffer over read due to lack of size validation while copying data from DBR buffer to RX buffer and can lead to Denial of Service in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

Weakness: CWE-125

Which versions are affected by CVE-2021-35071?

It affects 171 products.

Products include Qualcomm Aqt1000 Firmware, Qualcomm Ar8035 Firmware, Qualcomm Ar9380 Firmware, Qualcomm Csr8811 Firmware, Qualcomm Csrb31024 Firmware, Qualcomm Fsm10055 Firmware and 165 more.

How do I fix CVE-2021-35071?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-35071 being exploited?

There is no known exploitation of CVE-2021-35071 in the wild and no public exploit code.

All Qualcomm Aqt1000 Firmware vulnerabilities

Sources

Also known as 3000875, A-202032183, GHSA-hjgv-q6m4-r3hp, PUB-A-202032183.