CVE-2023-28576 Time-of-check Time-of-use (TOCTOU) Race Condition in Camera Kernel Driver
A race condition in the camera kernel driver allows userspace to modify packet headers, leading to out-of-bounds read/write issues and potential 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-2023-28576?
CVE-2023-28576 is a medium-severity vulnerability in Qualcomm Fastconnect 6800 Firmware, published on 8 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The buffer obtained from kernel APIs such as cam_mem_get_cpu_buf() may be readable/writable in userspace after kernel accesses it. In other words, user mode may race and modify the packet header (e.g. header.count), causing checks (e.g. size checks) in kernel code to be invalid. This may lead to out-of-bounds read/write issues.
Weakness: CWE-367
Which versions are affected by CVE-2023-28576?
It affects 31 products.
Products include Qualcomm Fastconnect 6800 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6426 Firmware, Qualcomm Qca6436 Firmware and 25 more.
How do I fix CVE-2023-28576?
No fix has been published for CVE-2023-28576 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-28576 being exploited?
There is no known exploitation of CVE-2023-28576 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Fastconnect 6800 Firmware
- CVE-2023-28581 Improper Restriction of Operations within the Bounds of a Memory Buffer in WLAN Firmware
- CVE-2025-27037 Use After Free in Camera Driver
- CVE-2025-21455 Time-of-check Time-of-use (TOCTOU) Race Condition in Camera_Linux
- CVE-2025-21474 Use After Free in BTHOST
- CVE-2024-45566 Use After Free in Camera Driver
Sources
Also known as GHSA-qjfp-56q2-gxwj.