What is CVE-2021-1940 vulnerability about?

The vulnerability CVE-2021-1940 is related to a use after free issue caused by improper handling of responses from firmware in various Qualcomm Snapdragon products.

How severe is CVE-2021-1940?

The severity of CVE-2021-1940 is rated as 7.8, which is considered high.

Which software products are affected by CVE-2021-1940?

Google Android and various firmware versions for Qualcomm Snapdragon products like Snapdragon Auto, Compute, Consumer IOT, Industrial IOT, Mobile, Voice & Music, and Wearables are affected.

Where can I find more information about CVE-2021-1940 vulnerability?

You can find more information about CVE-2021-1940 on the Qualcomm and Android security bulletin websites, as well as on Packet Storm Security.

Vulnerability/
CVE-2021-1940

high

8.4

CWE

416

7/7/2021

13/7/2021

3/8/2024

CVE-2021-1940: Use After Free

First published: Wed Jul 07 2021(Updated: )

Use after free can occur due to improper handling of response from firmware in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

Credit: product-security@qualcomm.com

Affected Software	Affected Version	How to fix
Android
Qualcomm AQT1000 Firmware
Qualcomm AQT1000 Firmware
Qualcomm AR8031
Qualcomm AR8031 Firmware
Qualcomm AR8035 Firmware
Qualcomm AR8035 Firmware
Qualcomm CSRA6620
Qualcomm CSRA6620
Qualcomm csra6640 firmware
Qualcomm csra6640 firmware
Qualcomm FSM10055
Qualcomm FSM10055 Firmware
Qualcomm FSM10056
Qualcomm fsm10056 firmware
Qualcomm QCA6391 Firmware
Qualcomm QCA6391 Firmware
Qualcomm QCA6420 Firmware
Qualcomm QCA6420 Firmware
Qualcomm QCA6430 firmware
Qualcomm QCA6430 firmware
Qualcomm QCA6564AU Firmware
Qualcomm QCA6564 Firmware
Qualcomm QCA6564A
Qualcomm QCA6564A Firmware
Qualcomm QCA6564AU Firmware
Qualcomm QCA6564A
Qualcomm QCA6574 Firmware
Qualcomm QCA6574 Firmware
qualcomm qca6574a firmware
qualcomm qca6574a firmware
Qualcomm QCA6574 Firmware
Qualcomm QCA6574AU
qualcomm QCA6584AU firmware
Qualcomm QCA6584
Qualcomm QCA6595AU Firmware
Qualcomm QCA6595AU Firmware
Qualcomm QCA6696 Firmware
Qualcomm QCA6696 Firmware
Qualcomm QCA8337 Firmware
Qualcomm QCA8337 Firmware
Qualcomm QCM6125
Qualcomm qcm6125 firmware
Qualcomm QCS405 Firmware
Qualcomm QCS405 Firmware
Qualcomm QCS410 Firmware
Qualcomm QCS410 Firmware
Qualcomm QCS610 Firmware
Qualcomm QCS610 Firmware
Qualcomm QCS6125 Firmware
Qualcomm QCS6125 Firmware
Qualcomm SA415M
Qualcomm sa415m firmware
Qualcomm SA515M Firmware
Qualcomm SA515M Firmware
Qualcomm SA6145P Firmware
Qualcomm SA6145P Firmware
Qualcomm SA6155
Qualcomm SA6155 Firmware
Qualcomm SA6155
Qualcomm SA6155P
Qualcomm SA8155P Firmware
Qualcomm SA8155 Firmware
Qualcomm SA8155
Qualcomm SA8155P Firmware
Qualcomm SA8195P
Qualcomm SA8195P Firmware
Qualcomm SD 675 Firmware
Qualcomm Snapdragon 675
qualcomm sd 8c firmware
Qualcomm Snapdragon 8c
Qualcomm SD 8cx firmware
Qualcomm Snapdragon 8cx
Qualcomm SDM660 Firmware
Qualcomm Snapdragon 660
Qualcomm Snapdragon 665
Qualcomm Snapdragon 665
Qualcomm SD 675 Firmware
Qualcomm Snapdragon 675
Qualcomm SD678 Firmware
Qualcomm SD678 Firmware
Qualcomm Snapdragon 720G Firmware
Qualcomm SD720G Firmware
Qualcomm SD 730 Firmware
Qualcomm Snapdragon 730
Qualcomm Snapdragon 855
Qualcomm Snapdragon 855
Qualcomm SDA429W Firmware
Qualcomm SDA429W Firmware
Qualcomm SDX50M Firmware
Qualcomm SDX50M Firmware
Qualcomm SDX55M Firmware
Qualcomm SDX55 Firmware
Qualcomm SDX55M Firmware
Qualcomm SDX55M Firmware
Qualcomm SM6250P Firmware
Qualcomm SM6250 Firmware
Qualcomm SM6250 Firmware
Qualcomm SM6250P Firmware
Qualcomm WCD9335 Firmware
Qualcomm WCD9335 Firmware
Qualcomm WCD9340 Firmware
Qualcomm WCD9340 Firmware
Qualcomm WCD9341
Qualcomm WCD9341 Firmware
Qualcomm WCD9370 Firmware
Qualcomm WCD9370 Firmware
Qualcomm WCD9375
Qualcomm WCD9375 Firmware
Qualcomm WCD9380
Qualcomm WCD9380 Firmware
Qualcomm WCN3610 Firmware
Qualcomm WCN3610 Firmware
Qualcomm WCN3620 Firmware
Qualcomm WCN3620 Firmware
Qualcomm WCN3660B
Qualcomm WCN3660B Firmware
Qualcomm WCN3950 Firmware
Qualcomm WCN3950 Firmware
Qualcomm Wcn3980
qualcomm wcn3980 firmware
qualcomm wcn3988 firmware
Qualcomm WCN3988
Qualcomm WCN3990
Qualcomm WCN3990
Qualcomm WCN3991 Firmware
Qualcomm WCN3991 Firmware
Qualcomm wcn3998 firmware
Qualcomm wcn3998 firmware
Qualcomm WCN3999 Firmware
Qualcomm WCN3999 Firmware
Qualcomm WSA8810
Qualcomm WSA8810 Firmware
qualcomm wsa8815 firmware
qualcomm wsa8815 firmware

Remedy

https://www.qualcomm.com/company/product-security/bulletins/july-2021-bulletin

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is CVE-2021-1940 vulnerability about?
The vulnerability CVE-2021-1940 is related to a use after free issue caused by improper handling of responses from firmware in various Qualcomm Snapdragon products.
How severe is CVE-2021-1940?
The severity of CVE-2021-1940 is rated as 7.8, which is considered high.
Which software products are affected by CVE-2021-1940?
Google Android and various firmware versions for Qualcomm Snapdragon products like Snapdragon Auto, Compute, Consumer IOT, Industrial IOT, Mobile, Voice & Music, and Wearables are affected.
Where can I find more information about CVE-2021-1940 vulnerability?
You can find more information about CVE-2021-1940 on the Qualcomm and Android security bulletin websites, as well as on Packet Storm Security.