CVE-2023-21640 Buffer Copy Without Checking Size of Input in Linux
A buffer overflow in Qualcomm Snapdragon firmware allows attackers to execute arbitrary code or escalate privileges via large input parameters.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-21640?
CVE-2023-21640 is a medium-severity memory corruption vulnerability in Qualcomm Fastconnect 6900 Firmware, published on 4 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Memory corruption in Linux when the file upload API is called with parameters having large buffer.
Which versions are affected by CVE-2023-21640?
It affects 6 products.
Products include Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Snapdragon 8 Gen 1 Firmware, Qualcomm Wcd9380 Firmware, Qualcomm Wsa8830 Firmware, Qualcomm Wsa8835 Firmware.
How do I fix CVE-2023-21640?
No fix has been published for CVE-2023-21640 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-21640 being exploited?
There is no known exploitation of CVE-2023-21640 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Fastconnect 6900 Firmware
Sources
Also known as GHSA-f8q5-x346-4rf5.