Memory Leak Vulnerability in fsl_ifc Package
Summary
GSD-2021-1001324: memory: fsl_ifc: fix leak of private memory on probe failure. Affects Kernel versions >= a20cbdeffce247a2b6fb83cd8d22433994068565, < 443f6ca6fd186b4fa4e6f377b6e19a91feb1a0d5. No fix is published. How to fix ↓
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Background
The fsl_ifc package is a memory management component in the Linux Kernel. It is responsible for handling memory allocation and deallocation for the Freescale Integrated Flash Controller (IFC) driver. The IFC driver provides support for accessing the flash memory on Freescale processors. The vulnerability in the fsl_ifc package leads to a memory leak when the probe process fails. This can result in the exhaustion of system memory resources and potential system instability.
Vulnerability Detail
The vulnerability in the fsl_ifc package occurs when the probe process fails. In this scenario, private memory allocated by the fsl_ifc driver is not properly deallocated, leading to a memory leak. An attacker could potentially exploit this vulnerability by repeatedly triggering the probe failure, causing the system to run out of memory and potentially crashing. The vulnerability was introduced in version v3.3 of the Linux Kernel and is fixed in version v5.4.134.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can disable the fsl_ifc driver if it is not required for their system. This can be done by blacklisting the fsl_ifc module or removing it from the kernel configuration. However, this workaround should only be considered if the fsl_ifc driver is not essential for the system's functionality.
Conclusion
The memory leak vulnerability in the fsl_ifc package can lead to system instability and potential crashes. It is crucial to update the Linux Kernel to version v5.4.134 or later to fix this vulnerability. Alternatively, users can disable the fsl_ifc driver if it is not required for their system. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a memory leak, causing the system to run out of memory and potentially crashing.
You can use Vulert's playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for any open-source vulnerabilities, including this memory leak vulnerability in the fsl_ifc package.
Yes, the vulnerability is fixed in version v5.4.134 of the Linux Kernel. It is recommended to update to this version or later to mitigate the vulnerability.
Yes, as a workaround, you can disable the fsl_ifc driver if it is not required for your system. This can be done by blacklisting the fsl_ifc module or removing it from the kernel configuration.
There are no known exploits for this vulnerability at the moment. However, it is still important to apply the necessary updates and patches to mitigate the risk.
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