UAF in sata_fsl_port_stop when rmmod sata_fsl
Summary
GSD-2021-1002553: sata_fsl: fix UAF in sata_fsl_port_stop when rmmod sata_fsl. Affects Kernel versions >= faf0b2e5afe7dae072d2715763c7f992b612b628, < adf098e2a8a1e1fc075d6a5ba2edd13cf7189082. No fix is published. How to fix ↓
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Background
The sata_fsl package is a component of the Linux Kernel that provides support for Freescale/NXP SATA controllers. It allows communication between the operating system and SATA devices, enabling data transfer and storage. The sata_fsl_port_stop function is responsible for stopping the SATA port when the sata_fsl module is removed from the system.
Vulnerability Detail
A use-after-free (UAF) vulnerability exists in the sata_fsl_port_stop function of the sata_fsl package. When the sata_fsl module is unloaded from the system using the rmmod command, the function fails to properly handle the removal of the SATA port, leading to a UAF 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.
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Workaround
No workaround has been provided for this vulnerability.
Conclusion
The sata_fsl package in the Linux Kernel is vulnerable to a use-after-free (UAF) vulnerability in the sata_fsl_port_stop function. This vulnerability could potentially allow an attacker to execute arbitrary code or cause a denial-of-service (DoS) condition. It is recommended to update the Linux Kernel to version v5.15.7 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability could potentially allow an attacker to execute arbitrary code or cause a denial-of-service (DoS) condition.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for any open-source vulnerabilities, including this one.
Yes, a patch for this vulnerability is available in the Linux Kernel version v5.15.7. Users are advised to update their kernel to this version or apply the specific commit (adf098e2a8a1e1fc075d6a5ba2edd13cf7189082) to their existing kernel source code.
The exact attack vector for this vulnerability has not been disclosed. However, in general, if an attacker can gain access to the system and unload the sata_fsl module, they may be able to exploit this vulnerability.
There is no evidence of this vulnerability being actively exploited at the moment. However, it is still recommended to apply the necessary patches or updates to mitigate the risk.
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