Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2023-52841
CVE-2023-52841:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2023-52841 affects the Linux kernel's media subsystem, specifically in the vidtv driver's multiplexer component. The vulnerability was discovered in the handling of network name allocation, where a missing check for the return value of kstrdup() could lead to a NULL pointer dereference (Kernel Git).
Technical details
The vulnerability exists in the vidtvmux.c file within the Linux kernel's media test drivers. The issue stems from an unchecked kstrdup() return value when allocating memory for the network name in the vidtvmux_init function. Additionally, there was a potential memory leak in the error handling path due to missing kfree() calls (Kernel Git).
Impact
If exploited, this vulnerability could lead to a NULL pointer dereference in the Linux kernel's media subsystem, potentially causing system crashes or denial of service conditions (NVD).
Mitigation and workarounds
The issue has been fixed by adding proper checks for the return value of kstrdup() and implementing correct memory cleanup using kfree() in the error handling path. The fix was committed to the Linux kernel repository (Kernel Git).
Additional resources
Source: This report was generated using AI
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