CVE-2021-35091 Memory corruption in Snapdragon Connectivity, Snapdragon Mobile

High 8.4 Published 14 Jun 2022 Updated 4 Aug 2024

An out-of-bounds read in Qualcomm Snapdragon firmware allows attackers to read memory or cause a denial of service via improper typecasting during page fault 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-2021-35091?

CVE-2021-35091 is a high-severity memory corruption vulnerability in Qualcomm Sd 8 Gen1 5g 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 out of bounds read due to improper typecasting while handling page fault for global memory in Snapdragon Connectivity, Snapdragon Mobile

Weakness: CWE-704

Which versions are affected by CVE-2021-35091?

It affects 6 products.

Products include Qualcomm Sd 8 Gen1 5g Firmware, Qualcomm Wcd9380 Firmware, Qualcomm Wcn6855 Firmware, Qualcomm Wcn6856 Firmware, Qualcomm Wsa8830 Firmware, Qualcomm Wsa8835 Firmware.

How do I fix CVE-2021-35091?

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-2021-35091 being exploited?

There is no known exploitation of CVE-2021-35091 in the wild and no public exploit code.

All Qualcomm Sd 8 Gen1 5g Firmware vulnerabilities

Sources

Also known as 3008877, A-204905109, ASB-A-204905109, GHSA-54q7-86rf-qx6x.