Use-after-free vulnerability in spi-zynqmp-gqspi package
Summary
GSD-2021-1000280: spi: spi-zynqmp-gqspi: fix use-after-free in zynqmp_qspi_exec_op. Affects Kernel versions >= 1c26372e5aa9e53391a1f8fe0dc7cd93a7e5ba9e, < 23269ac9f123eca3aea7682d3345c02e71ed696c. No fix is published. How to fix ↓
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Background
The spi-zynqmp-gqspi package is a component of the Linux Kernel that provides support for the ZynqMP GQSPI controller. This controller is responsible for handling SPI (Serial Peripheral Interface) communication on Xilinx ZynqMP SoCs. SPI is a synchronous serial communication interface commonly used for connecting microcontrollers to peripheral devices. The spi-zynqmp-gqspi package enables the functionality of the GQSPI controller, allowing devices to communicate with SPI-compatible peripherals.
Vulnerability Detail
The identified vulnerability in the spi-zynqmp-gqspi package is a use-after-free issue in the zynqmp_qspi_exec_op function. A use-after-free vulnerability occurs when a program continues to use a memory region after it has been freed, leading to potential memory corruption or arbitrary code execution. In this case, the vulnerability arises from improper handling of memory deallocation in the zynqmp_qspi_exec_op function. An attacker could potentially exploit this vulnerability to execute arbitrary code or cause a denial-of-service condition.
How To Fix
No fixed version is published for this vulnerability.
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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-zynqmp-gqspi package can be mitigated by updating the Linux Kernel to version v5.12.4 or later. This update includes the necessary fix to address the vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The spi-zynqmp-gqspi package is a component of the Linux Kernel that provides support for the ZynqMP GQSPI controller, enabling SPI communication on Xilinx ZynqMP SoCs.
A use-after-free vulnerability occurs when a program continues to use a memory region after it has been freed, potentially leading to memory corruption or arbitrary code execution.
This vulnerability could be exploited by an attacker to execute arbitrary code or cause a denial-of-service condition.
To fix this vulnerability, update the Linux Kernel to version v5.12.4 or later, which includes the necessary fix for the use-after-free issue.
No, there is no known workaround for this vulnerability. It is recommended to update the Linux Kernel to address the issue.
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