Refcount Leak in ata: pata_octeon_cf
Summary
GSD-2022-1003265: ata: pata_octeon_cf: Fix refcount leak in octeon_cf_probe. Affects Kernel versions >= 43f01da0f2794b464ade2ffe1f780c69d7ce7b75, < 888312dc297a8a103f6371ef668c7e04f57a7679. No fix is published. How to fix ↓
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Background
The ata: pata_octeon_cf is a driver in the Linux Kernel that provides support for the Octeon CompactFlash (CF) interface. It allows communication between the system and CF storage devices. The driver is responsible for initializing and managing the CF interface, enabling data transfer between the system and CF cards. However, a vulnerability has been discovered in the driver that can lead to a refcount leak.
Vulnerability Detail
The vulnerability in ata: pata_octeon_cf driver is due to a refcount leak in the octeon_cf_probe function. When the driver is probed, it increments the reference count for the CF interface. However, if an error occurs during the probe process, the reference count is not properly decremented, leading to a refcount leak. This can result in resource exhaustion and potential denial-of-service attacks. An attacker could exploit this vulnerability by repeatedly triggering the probe process, causing the reference count to continuously increase and deplete system resources.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The refcount leak vulnerability in the ata: pata_octeon_cf driver can lead to resource exhaustion and potential denial-of-service attacks. It is crucial to update the Linux Kernel to version v5.15.47 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The vulnerability can lead to resource exhaustion and potential denial-of-service attacks. An attacker could exploit this vulnerability to deplete system resources by triggering the probe process repeatedly.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities.
At the time of this report, there is no known exploit for this vulnerability. However, it is recommended to update the Linux Kernel to the latest version to mitigate the risk.
There are no reported incidents related to this vulnerability at the moment. However, it is important to apply the recommended fix to ensure the security and stability of your system.
You can find more information about this vulnerability in the Linux Kernel's official repository. The vulnerability details are available in the commit history and issue tracking system.
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