Vulnerability in isdn: mISDN: netjet: Fix crash in nj_probe
Summary
GSD-2021-1000886: isdn: mISDN: netjet: Fix crash in nj_probe:. Affects Kernel versions < 9d7d4649dc1c53acf76df260fd519db698ed20d7. No fix is published. How to fix ↓
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Background
The isdn package is a part of the Linux Kernel ecosystem and is responsible for handling Integrated Services Digital Network (ISDN) connections. It provides the necessary drivers and protocols for ISDN devices to communicate with the operating system. The mISDN subsystem within the isdn package specifically deals with the management of ISDN devices. One component of mISDN is the netjet driver, which is used for handling NetJet ISDN cards. These cards allow for ISDN connectivity over Ethernet. However, a vulnerability has been discovered in the nj_probe function of the netjet driver, which can lead to a crash in certain scenarios.
Vulnerability Detail
The vulnerability in the nj_probe function of the netjet driver can result in a crash. This crash can be triggered by specific inputs or conditions, which may be exploited by an attacker to disrupt the system or potentially execute arbitrary code. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in the Linux Kernel version v5.4.126 by commit 9d7d4649dc1c53acf76df260fd519db698ed20d7.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The vulnerability in the nj_probe function of the netjet driver has the potential to cause a crash in certain scenarios. It is crucial to update the Linux Kernel to version v5.4.126 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The isdn package is a component of the Linux Kernel that handles Integrated Services Digital Network (ISDN) connections. It provides the necessary drivers and protocols for ISDN devices to communicate with the operating system.
The mISDN subsystem is a part of the isdn package and is responsible for managing ISDN devices. It includes drivers and protocols for various ISDN hardware.
The netjet driver is a component of the mISDN subsystem that handles NetJet ISDN cards. These cards enable ISDN connectivity over Ethernet.
The nj_probe function is a part of the netjet driver and is responsible for initializing and probing NetJet ISDN cards during system startup.
Yes, this vulnerability has been fixed in the Linux Kernel version v5.4.126 by commit 9d7d4649dc1c53acf76df260fd519db698ed20d7.
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