CVE-2022-49231: 
Linux Kernel vulnerability analysis and mitigation

CVE-2022-49231 affects the Linux kernel's rtw88 wireless driver. The vulnerability was discovered in the hardware scan functionality where insufficient memory allocation led to buffer overruns and memory leaks. The issue was disclosed on February 26, 2025, and involves the rtw88 driver's handling of memory during hardware scan operations (NVD).

The vulnerability stems from a memory allocation issue in the rtw88 driver where less memory was allocated than actually required. When performing hardware scans, the buffer overwrite caused the memory management module to raise access violation faults. Additionally, the code path had potential memory leaks when returning early from operations. The fix involved correcting the size calculations and implementing proper deinitialization flow (Kernel Commit).

When exploited, this vulnerability could cause the memory management module to raise access violation faults, potentially leading to system instability or crashes. The combination of buffer overruns and memory leaks could affect system reliability and potentially lead to denial of service conditions (NVD).

The vulnerability requires local access to a system running the affected Linux kernel version with the rtw88 wireless driver. The issue is triggered during hardware scan operations, which typically occur during wireless network scanning activities (Kernel Commit).

The issue has been fixed by modifying the memory allocation logic to use the correct buffer size and implementing proper deinitialization flow. The fix was implemented in the Linux kernel through a patch that corrects the size calculations and memory handling in the rtw88 driver (Kernel Commit).