CVE-2021-1931 Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music

Medium 6.7 Published 13 Jul 2021 Updated 3 Aug 2024

A buffer overflow in Qualcomm Snapdragon firmware allows attackers to execute arbitrary code or escalate privileges via fast boot commands.

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-2021-1931?

CVE-2021-1931 is a medium-severity memory corruption 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

Possible buffer overflow due to improper validation of buffer length while processing fast boot commands in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music

Weakness: CWE-120

Which versions are affected by CVE-2021-1931?

It affects 121 products.

Products include Qualcomm Aqt1000 Firmware, Qualcomm Ar8031 Firmware, Qualcomm Ar8035 Firmware, Qualcomm Csra6620 Firmware, Qualcomm Csra6640 Firmware, Qualcomm Csrb31024 Firmware and 115 more.

How do I fix CVE-2021-1931?

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-2021-1931 being exploited?

There is no known exploitation of CVE-2021-1931 in the wild and no public exploit code.

Public exploit code: 4 proofs of concept on GitHub.

All Qualcomm Aqt1000 Firmware vulnerabilities

Sources

Also known as 2820093, A-179057550, ASB-A-179057550, GHSA-76g8-78xr-pq89.