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Vulnerability DatabaseCVE-2022-49173
CVE-2022-49173:
Linux Debian vulnerability analysis and mitigation
Overview
CVE-2022-49173 affects the Linux kernel's SPI FSI driver. The vulnerability was discovered in the data transfer routines where polling loops for status register checks could potentially never exit if the hardware enters a bad state (Kernel Git).
Technical details
The vulnerability exists in the drivers/spi/spi-fsi.c file where the data transfer routines must poll the status register to determine when more data can be shifted in or out. The polling loops lacked timeout mechanisms, which could lead to infinite loops if the hardware status becomes unresponsive (Kernel Git).
Impact
If exploited, this vulnerability could cause the system to become unresponsive due to infinite polling loops in the SPI FSI driver, effectively creating a denial of service condition (Kernel Git).
Mitigation and workarounds
The issue has been patched by implementing a timeout mechanism (SPIFSISTATUSTIMEOUTMS set to 100ms) for the polling loops. The fix returns an ETIMEDOUT error if the timeout is exceeded, preventing infinite loops (Kernel Git).
Additional resources
Source: This report was generated using AI
Related Linux Debian vulnerabilities:
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