Use-after-free vulnerability in spi package
Summary
GSD-2021-1000431: spi: Fix use-after-free with devm_spi_alloc_*. Affects Kernel versions >= 3e04a4976addbedcad326f47b0dd4efc570a1fac, < 001c8e83646ad3b847b18f6ac55a54367d917d74. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The spi package is a component of the Linux Kernel that provides support for Serial Peripheral Interface (SPI) devices. SPI is a synchronous serial communication interface commonly used for connecting microcontrollers, sensors, and other peripheral devices to a central processing unit (CPU). The spi package allows the kernel to communicate with SPI devices by providing APIs and drivers. However, a use-after-free vulnerability has been discovered in the spi package, which can lead to potential security issues.
Vulnerability Detail
The use-after-free vulnerability in the spi package occurs when the devm_spi_alloc_* functions are used. These functions allocate memory for a SPI device and register it with the kernel, but they do not properly handle the deallocation of the memory when the device is released. This can result in a situation where the memory is freed, but a reference to it is still held, leading to a use-after-free condition. An attacker could potentially exploit this vulnerability to execute arbitrary code or cause a denial-of-service (DoS) condition.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
There is no known workaround for this vulnerability. It is recommended to apply the fix by updating the Linux Kernel.
Conclusion
The use-after-free vulnerability in the spi package of the Linux Kernel can lead to potential security issues, including arbitrary code execution and denial-of-service. It is crucial to update the kernel to version v5.4.119 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The spi package is a component of the Linux Kernel that provides support for Serial Peripheral Interface (SPI) devices.
A use-after-free vulnerability occurs when a program or system continues to use a memory address after it has been freed, leading to potential security issues.
This vulnerability can potentially allow an attacker to execute arbitrary code or cause a denial-of-service (DoS) condition.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.4.119 or later.
There is no known workaround for this vulnerability. It is recommended to apply the fix by updating the Linux Kernel.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
