CVE-2023-21639 Buffer Copy Without Checking the Size of Input in Audio
Attacker can trigger memory corruption in Qualcomm Snapdragon audio processing, potentially leading to code execution or privilege escalation.
- 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-2023-21639?
CVE-2023-21639 is a medium-severity memory corruption vulnerability in Qualcomm Aqt1000 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 Audio while processing sva_model_serializer using memory size passed by HIDL client.
Which versions are affected by CVE-2023-21639?
It affects 22 products.
Products include Qualcomm Aqt1000 Firmware, Qualcomm Fastconnect 6200 Firmware, Qualcomm Qca6420 Firmware, Qualcomm Qca6430 Firmware, Qualcomm Sa4150p Firmware, Qualcomm Sa4155p Firmware and 16 more.
How do I fix CVE-2023-21639?
No fix has been published for CVE-2023-21639 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-2023-21639 being exploited?
There is no known exploitation of CVE-2023-21639 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Aqt1000 Firmware
- CVE-2025-21479 Qualcomm Multiple Chipsets Incorrect Authorization
- CVE-2025-21480 Qualcomm Multiple Chipsets Incorrect Authorization
- CVE-2023-28562 Buffer Copy Without Checking Size of Input in QESL
- CVE-2022-40514 Buffer copy without checking size of input in WLAN Firmware
- CVE-2022-22096 Memory corruption in Snapdragon Connectivity, Snapdragon Mobile
Sources
Also known as GHSA-5ww7-v94g-g36v.