CVE-2021-1958 Use after free in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Mobile, Snapdragon Wearables
A race condition in the Qualcomm fastrpc kernel driver allows attackers to trigger a use-after-free, potentially leading to code execution or privilege escalation on Snapdragon devices.
- 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-2021-1958?
CVE-2021-1958 is a medium-severity use after free vulnerability in Qualcomm Qca6574a Firmware, published on 9 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A race condition in fastrpc kernel driver for dynamic process creation can lead to use after free scenario in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Mobile, Snapdragon Wearables
Weakness: CWE-362
Which versions are affected by CVE-2021-1958?
It affects 38 products.
Products include Qualcomm Qca6574a Firmware, Qualcomm Qca6574au Firmware, Qualcomm Qca6595 Firmware, Qualcomm Qca6595au Firmware, Qualcomm Qca6696 Firmware, Qualcomm Sa6145p Firmware and 32 more.
How do I fix CVE-2021-1958?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2021-1958 being exploited?
There is no known exploitation of CVE-2021-1958 in the wild and no public exploit code.
Sources
Also known as 2669288, A-181676968, GHSA-j6hv-997g-w46w, PUB-A-181676968.