Potential NULL Pointer Dereference in nfc_genl_dump_ses_done
Summary
GSD-2021-1002381: nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done. Affects Kernel versions >= ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95, < 69bb79a8f5bb9f436b6f1434ca9742591b7bbe18. No fix is published. How to fix ↓
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Background
The nfc package is a component of the Linux Kernel that provides support for Near Field Communication (NFC) functionality. NFC enables short-range wireless communication between devices, allowing for contactless data transfer and payment transactions. The nfc_genl_dump_ses_done function is responsible for handling the completion of NFC session dumps. However, a potential vulnerability exists within this function that could lead to a NULL pointer dereference.
Vulnerability Detail
The vulnerability arises from a NULL pointer dereference in the nfc_genl_dump_ses_done function. This occurs when the function attempts to access or manipulate data using a pointer that has not been assigned a valid memory address. An attacker could potentially exploit this vulnerability by crafting a malicious NFC session dump request, leading to a crash or potential code execution. 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
In conclusion, a potential NULL pointer dereference vulnerability has been identified in the nfc package of the Linux Kernel. This vulnerability can be mitigated by updating to the latest stable version of the Linux Kernel. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The nfc package is a component of the Linux Kernel that provides support for Near Field Communication (NFC) functionality. It enables short-range wireless communication between devices for contactless data transfer and payment transactions.
A NULL pointer dereference occurs when a program attempts to access or manipulate data using a pointer that has not been assigned a valid memory address. This can lead to crashes or potential code execution.
An attacker could potentially exploit this vulnerability by crafting a malicious NFC session dump request, triggering a NULL pointer dereference and causing a crash or potential code execution.
No, the impact and attack plausibility of this vulnerability have not been proven. However, it is still recommended to apply the fix to ensure the security of the system.
To fix this vulnerability, update the Linux Kernel to version v4.9.293 or later, which includes the necessary fix for the NULL pointer dereference in nfc_genl_dump_ses_done.
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