What is the severity of CVE-2021-1939?

CVE-2021-1939 has a high severity rating due to the potential for null pointer dereference vulnerabilities.

How do I fix CVE-2021-1939?

To fix CVE-2021-1939, update your affected Qualcomm firmware to the latest version that addresses this vulnerability.

What devices are affected by CVE-2021-1939?

CVE-2021-1939 affects various Qualcomm Snapdragon powered devices, including those in automotive, computing, connectivity, IoT, and wearable categories.

Is CVE-2021-1939 exploitable remotely?

Yes, CVE-2021-1939 can potentially be exploited remotely depending on the specific configuration and application environment.

What are the consequences of exploiting CVE-2021-1939?

Exploiting CVE-2021-1939 may lead to denial of service or arbitrary code execution on the affected devices.

Vulnerability/
CVE-2021-1939

high

8.4

CWE

476

2/8/2021

17/9/2021

3/8/2024

CVE-2021-1939: Null Pointer Dereference

First published: Mon Aug 02 2021(Updated: )

Null pointer dereference occurs due to improper validation when the preemption feature enablement is toggled in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Wearables

Credit: product-security@qualcomm.com

Affected Software	Affected Version	How to fix
Android
Qualcomm APQ8009W Firmware
Qualcomm APQ8009 Firmware
Qualcomm PQ8009 Firmware
Qualcomm APQ8009
Qualcomm APQ8017
Qualcomm APQ8017
Qualcomm APQ8053
Qualcomm APQ8053 Firmware
Qualcomm AQT1000 Firmware
Qualcomm AQT1000 Firmware
Qualcomm 8909 Firmware
Qualcomm Snapdragon 8909
Qualcomm MSM8917
Qualcomm MSM8917 Firmware
Qualcomm 8953Pro Firmware
Qualcomm MSM8953 Firmware
Qualcomm QCA-4020 Firmware
Qualcomm QCA-4020-1-217MSP
Qualcomm QCA6174A Firmware
Qualcomm QCA6174A Firmware
Qualcomm QCA6310 Firmware
Qualcomm QCA6310 Firmware
Qualcomm QCA6335 Firmware
Qualcomm QCA6335 Firmware
Qualcomm QCA6390 Firmware
Qualcomm QCA6390 Firmware
Qualcomm QCA6391 Firmware
Qualcomm QCA6391 Firmware
Qualcomm QCA6420 Firmware
Qualcomm QCA6420 Firmware
Qualcomm QCA6421 Firmware
Qualcomm QCA6421 Firmware
Qualcomm QCA6426 Firmware
Qualcomm QCA6426 Firmware
Qualcomm QCA6430 firmware
Qualcomm QCA6430 firmware
Qualcomm QCA6431 Firmware
Qualcomm QCA6431
Qualcomm QCA6436 Firmware
Qualcomm QCA6436 Firmware
Qualcomm QCA6574 Firmware
Qualcomm QCA6574 Firmware
Qualcomm QCA6574A Firmware
qualcomm qca6574a firmware
Qualcomm QCA6574 Firmware
Qualcomm QCA6574AU
Qualcomm QCA6595AU Firmware
Qualcomm QCA6595AU Firmware
Qualcomm QCA6696 Firmware
Qualcomm QCA6696 Firmware
Qualcomm QCA9377 Firmware
Qualcomm QCA9377 Firmware
Qualcomm QCA9379
Qualcomm QCA9379
Qualcomm QCS603
Qualcomm QCS603 Firmware
Qualcomm QCS605
Qualcomm QCS605 Firmware
Qualcomm QET4101
Qualcomm QET4101 Firmware
qualcomm SM8250 firmware
Qualcomm QSM8250
Qualcomm QSW8573
Qualcomm QSW8573 Firmware
Qualcomm 215 Mobile Firmware
Qualcomm 215 Firmware
Qualcomm SA6145P Firmware
Qualcomm SA6145P Firmware
Qualcomm SA6150P Firmware
Qualcomm SA6150P Firmware
Qualcomm SA6155
Qualcomm SA6155 Firmware
Qualcomm SA6155
Qualcomm SA6155P
Qualcomm SA8145P
Qualcomm SA8145P Firmware
Qualcomm SA8150P Firmware
Qualcomm SA8150P Firmware
Qualcomm SA8155P Firmware
Qualcomm SA8155 Firmware
Qualcomm SA8155
Qualcomm SA8155P Firmware
Qualcomm SA8195P
Qualcomm SA8195P Firmware
Qualcomm SD 675 Firmware
Qualcomm Snapdragon 675
Qualcomm 205 Firmware
Qualcomm Snapdragon 205
Qualcomm SD 210 Firmware
Qualcomm SD210 Firmware
Qualcomm SD429
Qualcomm SD429 Firmware
Qualcomm SDM439 Firmware
Qualcomm Snapdragon 439
Qualcomm SD 450 Firmware
Qualcomm Snapdragon 450
Qualcomm SD 480 Firmware
Qualcomm Snapdragon 480
Qualcomm SD 632 firmware
Qualcomm Snapdragon 632
Qualcomm Snapdragon 665
Qualcomm Snapdragon 665
Qualcomm SD 670
Qualcomm SD 670
Qualcomm SD 675 Firmware
Qualcomm Snapdragon 675
Qualcomm SD678 Firmware
Qualcomm SD678 Firmware
Qualcomm Snapdragon 690 5G Firmware
Qualcomm Snapdragon 690 5G Firmware
Qualcomm SD 730 Firmware
Qualcomm Snapdragon 730
Qualcomm SD750G Firmware
Qualcomm Snapdragon 750G
Qualcomm SD765 Firmware
Qualcomm Snapdragon 765
Qualcomm SD765 Firmware
Qualcomm Snapdragon 765G
Qualcomm SD768 Firmware
Qualcomm SD768G Firmware
Qualcomm SD778G Firmware
Qualcomm Snapdragon 778G
Qualcomm Snapdragon 780G Firmware
Qualcomm Snapdragon 780G
Qualcomm SDA845 Firmware
Qualcomm Snapdragon 845
Qualcomm Snapdragon 855
Qualcomm Snapdragon 855
Qualcomm Snapdragon 865 5G Firmware
Qualcomm Snapdragon 865 5G Firmware
Qualcomm SD870
Qualcomm Snapdragon 870
Qualcomm Snapdragon 888 Firmware
Qualcomm Snapdragon 888 Firmware
Qualcomm Snapdragon 888 5G Firmware
Qualcomm Snapdragon 888 5G
Qualcomm SDA429W Firmware
Qualcomm SDA429W Firmware
Qualcomm SDM429W
qualcomm SDM429W firmware
Qualcomm SDM830 Firmware
Qualcomm Snapdragon 830
Qualcomm SDX24
Qualcomm SDX24
Qualcomm SDX55M Firmware
Qualcomm SDX55 Firmware
Qualcomm SDX55M Firmware
Qualcomm SDX55M Firmware
Qualcomm SDXR1
Qualcomm SDXR1 Firmware
Qualcomm SDXR2 5G Firmware
Qualcomm SDXR2 5G Firmware
Qualcomm SM4125
Qualcomm SM4125 Firmware
Qualcomm SSM7250-AA Firmware
Qualcomm SSM7250-AA Firmware
Qualcomm SM7325-AE Firmware
Qualcomm SM7325 Firmware
Qualcomm WCD9335 Firmware
Qualcomm WCD9335 Firmware
Qualcomm WCD9340 Firmware
Qualcomm WCD9340 Firmware
Qualcomm WCD9370 Firmware
Qualcomm WCD9370 Firmware
Qualcomm WCD9371 Firmware
Qualcomm WCD9371 Firmware
Qualcomm WCD9375
Qualcomm WCD9375 Firmware
Qualcomm WCD9380
Qualcomm WCD9380 Firmware
Qualcomm WCD9385
Qualcomm WCD9385 Firmware
Qualcomm WCN3610 Firmware
Qualcomm WCN3610 Firmware
Qualcomm WCN3615 Firmware
Qualcomm WCN3615 Firmware
Qualcomm WCN3620 Firmware
Qualcomm WCN3620 Firmware
Qualcomm WCN3660B Firmware
Qualcomm WCN3660 firmware
Qualcomm WCN3660B
Qualcomm WCN3660B Firmware
Qualcomm WCN3680B Firmware
Qualcomm WCN3680B Firmware
Qualcomm WCN3680B Firmware
Qualcomm WCN3680B Firmware
Qualcomm WCN3910 Firmware
Qualcomm WCN3910 Firmware
Qualcomm WCN3950 Firmware
Qualcomm WCN3950 Firmware
Qualcomm WCN3988 Firmware
Qualcomm WCN3988 Firmware
Qualcomm WCN3991 Firmware
Qualcomm WCN3991 Firmware
Qualcomm WCN3998 Firmware
Qualcomm wcn3998 firmware
Qualcomm WCN6740 Firmware
Qualcomm WCN6740 Firmware
Qualcomm WCN6750 Firmware
Qualcomm WCN6750 Firmware
Qualcomm WCN6850 Firmware
Qualcomm WCN6850 Firmware
Qualcomm WCN6851 Firmware
Qualcomm WCN6851 Firmware
Qualcomm WCN6855 Firmware
Qualcomm WCN6855 Firmware
Qualcomm WCN6856 Firmware
Qualcomm WCN6856 Firmware
Qualcomm WSA8810
Qualcomm WSA8810 Firmware
Qualcomm WSA8815 Firmware
Qualcomm WSA8815 Firmware
Qualcomm WSA8830
Qualcomm WSA8830
Qualcomm WSA8835
Qualcomm WSA8835 Firmware

Remedy

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

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-1939?
CVE-2021-1939 has a high severity rating due to the potential for null pointer dereference vulnerabilities.
How do I fix CVE-2021-1939?
To fix CVE-2021-1939, update your affected Qualcomm firmware to the latest version that addresses this vulnerability.
What devices are affected by CVE-2021-1939?
CVE-2021-1939 affects various Qualcomm Snapdragon powered devices, including those in automotive, computing, connectivity, IoT, and wearable categories.
Is CVE-2021-1939 exploitable remotely?
Yes, CVE-2021-1939 can potentially be exploited remotely depending on the specific configuration and application environment.
What are the consequences of exploiting CVE-2021-1939?
Exploiting CVE-2021-1939 may lead to denial of service or arbitrary code execution on the affected devices.