CVE-2021-35133 Use after free in Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
A use-after-free vulnerability in the Qualcomm synx driver allows attackers to execute arbitrary code or escalate privileges via multiple release calls.
- 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-2021-35133?
CVE-2021-35133 is a medium-severity use after free vulnerability in Qualcomm Ar8035 Firmware, published on 2 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Use after free in the synx driver issue while performing other functions during multiple invocation of synx release calls in Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
Weakness: CWE-416
Which versions are affected by CVE-2021-35133?
It affects 36 products.
Products include Qualcomm Ar8035 Firmware, Qualcomm Qca6174a Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca8081 Firmware, Qualcomm Qca8337 Firmware, Qualcomm Qca9377 Firmware and 30 more.
How do I fix CVE-2021-35133?
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-2021-35133 being exploited?
There is no known exploitation of CVE-2021-35133 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Ar8035 Firmware
- CVE-2023-33106 Qualcomm Multiple Chipsets Use of Out-of-Range Pointer Offset
- CVE-2024-45569 Improper Validation of Array Index in WLAN Host Communication
- CVE-2024-21473 Improper Input Validation in WIN SON
- CVE-2023-28582 Buffer Copy Without Checking Size of Input in Data Modem
- CVE-2023-43552 Use After Free in WLAN Host Communication
Sources
Also known as 3031134, A-213241418, GHSA-5wcq-2m8r-q254, PUB-A-213241418.