CVE-2021-1939 Null dereference in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Wearables
A null pointer dereference in Qualcomm Snapdragon firmware allows attackers to cause a denial of service when toggling preemption features.
- 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-2021-1939?
CVE-2021-1939 is a high-severity vulnerability in Qualcomm Apq8009 Firmware, published on 17 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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
Weakness: CWE-476
Which versions are affected by CVE-2021-1939?
It affects 108 products.
Products include Qualcomm Apq8009 Firmware, Qualcomm Apq8009w Firmware, Qualcomm Apq8017 Firmware, Qualcomm Apq8053 Firmware, Qualcomm Aqt1000 Firmware, Qualcomm Msm8909w Firmware and 102 more.
How do I fix CVE-2021-1939?
Apply the vendor's patch.
Is CVE-2021-1939 being exploited?
There is no known exploitation of CVE-2021-1939 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Apq8009 Firmware
- CVE-2021-1905 Qualcomm Multiple Chipsets Use-After-Free
- CVE-2020-11261 Qualcomm Multiple Chipsets Improper Input Validation
- CVE-2021-1906 Qualcomm Multiple Chipsets Detection of Error Condition Without Action
- CVE-2022-40510 Buffer copy without checking size of input in Audio.
- CVE-2022-22088 Integer Overflow to Buffer Overflow in Bluetooth HOST
Sources
Also known as 2826994, A-187073199, ASB-A-187073199, GHSA-j5qr-8rrw-8f9v.