Potential NULL Pointer Dereference in nfc_genl_dump_ses_done
Summary
GSD-2021-1002401: nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done. Affects Kernel versions >= ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95, < 811a7576747760bcaf60502f096d1e6e91d566fa. No fix is published. How to fix ↓
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Background
The Kernel package is a critical component of the Linux operating system. It provides the core functionality and acts as a bridge between the hardware and software layers. The nfc subsystem within the Kernel is responsible for handling Near Field Communication (NFC) protocols and devices. NFC enables short-range communication between devices, allowing for contactless data exchange. This vulnerability specifically affects the nfc_genl_dump_ses_done function within the nfc subsystem.
Vulnerability Detail
The nfc_genl_dump_ses_done function in the nfc subsystem of the Kernel is susceptible to a potential NULL pointer dereference. This vulnerability was introduced in version v3.12 of the Linux Kernel by commit ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 and was fixed in version v4.14.258 by commit 811a7576747760bcaf60502f096d1e6e91d566fa. If exploited, this vulnerability could lead to a system crash or potentially allow an attacker to execute arbitrary code with kernel privileges. It is important to note that the impact and attack plausibility of this vulnerability have not been proven.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The potential NULL pointer dereference vulnerability in the nfc_genl_dump_ses_done function of the nfc subsystem within the Linux Kernel can have serious consequences if exploited. It is crucial to update the Kernel to the fixed version to mitigate the risk. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can range from a system crash to potential arbitrary code execution with kernel privileges.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it in real-time.
No specific workaround has been provided for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
At the time of this report, no known exploits for this vulnerability have been disclosed.
You can find more information about this vulnerability in the GSD-2021-1002401 entry of the GSD database maintained by the Cloud Security Alliance. The source link is provided in the vulnerability details.
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