CVE-2021-1974 Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

High 7.5 Published 9 Sep 2021 Updated 3 Aug 2024

A buffer over-read in Qualcomm Snapdragon firmware allows attackers to read sensitive memory or cause denial of service due to SMMU alignment issues.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2021-1974?

CVE-2021-1974 is a high-severity memory corruption vulnerability in Qualcomm Aqt1000 Firmware, published on 9 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Possible buffer over read due to lack of alignment between map or unmap length of IPA SMMU and WLAN SMMU in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

Weakness: CWE-125

Which versions are affected by CVE-2021-1974?

It affects 190 products.

Products include Qualcomm Aqt1000 Firmware, Qualcomm Ar8035 Firmware, Qualcomm Ar9380 Firmware, Qualcomm Csr8811 Firmware, Qualcomm Csrb31024 Firmware, Qualcomm Fsm10055 Firmware and 184 more.

How do I fix CVE-2021-1974?

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-2021-1974 being exploited?

There is no known exploitation of CVE-2021-1974 in the wild and no public exploit code.

All Qualcomm Aqt1000 Firmware vulnerabilities

Sources

Also known as 2728644, A-190403734, ASB-A-190403734, GHSA-55x4-8xjx-px24.