CVE-2023-54093
Null Pointer Dereference in Linux anysee Media Driver Causes Crash
Publication date: 2025-12-24
Last updated on: 2025-12-24
Assigner: kernel.org
Description
Description
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| anysee | anysee | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a null pointer dereference in the Linux kernel's anysee driver, specifically in the function anysee_master_xfer. The issue occurs because the function processes user-controlled data where a message buffer pointer (msg[i].buf) can be null while its length (msg[i].len) is zero. Previous checks only verified the buffer pointer but not the length, allowing malicious input to bypass these checks. When the code attempts to access msg[i].buf[0] without verifying the length, it causes a null pointer dereference, potentially crashing the system. The fix involves adding a check on msg[i].len to prevent this crash.
How can this vulnerability impact me? :
This vulnerability can cause a null pointer dereference leading to a system crash or denial of service in the Linux kernel's anysee driver. An attacker controlling the input to anysee_master_xfer could exploit this to crash the system or disrupt normal operation.