Sleeping Function Called from Invalid Context in isdn: mISDN
Summary
GSD-2021-1002185: isdn: mISDN: Fix sleeping function called from invalid context. Affects Kernel versions < 6510e80a0b81b5d814e3aea6297ba42f5e76f73c. 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 ISDN (Integrated Services Digital Network) connections. It provides the necessary functionality for communication over ISDN lines. The mISDN (Multiprotocol ISDN) module within the isdn package is specifically designed to support multiple ISDN protocols. However, a vulnerability has been discovered in the mISDN module that allows a sleeping function to be called from an invalid context.
Vulnerability Detail
The vulnerability in the mISDN module occurs when a sleeping function is called from an invalid context. This can lead to various issues, such as system crashes, resource leaks, or privilege escalation. An attacker may be able to exploit this vulnerability to execute arbitrary code or disrupt the normal operation of the system. The vulnerability has been fixed in the Linux Kernel version v5.15 by commit 6510e80a0b81b5d814e3aea6297ba42f5e76f73c.
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 isdn package's mISDN module is vulnerable to a sleeping function being called from an invalid context. This can result in system crashes, resource leaks, or privilege escalation. It is recommended to update the Linux Kernel to version v5.15 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 ecosystem that handles ISDN connections.
The mISDN (Multiprotocol ISDN) module is a part of the isdn package and provides support for multiple ISDN protocols.
The vulnerability can lead to system crashes, resource leaks, or privilege escalation. It may also allow an attacker to execute arbitrary code or disrupt the normal operation of the system.
Yes, the vulnerability has been fixed in the Linux Kernel version v5.15 by commit 6510e80a0b81b5d814e3aea6297ba42f5e76f73c.
To fix this vulnerability, update the Linux Kernel to version v5.15 or later by following the provided instructions.
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