Vulnerability in Kernel package: s390/qeth: fix NULL deref in qeth_clear_working_pool_list()
Summary
UVI-2021-1001670: s390/qeth: fix NULL deref in qeth_clear_working_pool_list(). Affects Kernel versions >= eff73e16ee116f6eafa2be48fab42659a27cb453, < db94f89e1dadf693c15c2d60de0c34777cea5779. No fix is published. How to fix ↓
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Background
The Kernel package is a crucial component of the Linux operating system. It provides the core functionality and interfaces for the system's hardware, software, and processes. The s390/qeth module within the Kernel package is responsible for handling network communication for IBM System z devices. It allows for communication between the mainframe and external networks. However, a vulnerability has been discovered in the qeth_clear_working_pool_list() function of the s390/qeth module, which can lead to a NULL dereference issue.
Vulnerability Detail
The vulnerability in the qeth_clear_working_pool_list() function of the s390/qeth module allows an attacker to trigger a NULL dereference, potentially leading to a system crash or other unexpected behavior. This vulnerability was introduced in version v5.9 of the Linux Kernel and has been fixed in version v5.10.70. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The vulnerability in the s390/qeth module of the Kernel package can be mitigated by updating to version v5.10.70 or later. It is important to promptly apply this update to ensure the security and stability of the Linux operating system. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel package is a fundamental component of the Linux operating system, providing core functionality and interfaces for hardware, software, and processes.
The s390/qeth module is responsible for network communication for IBM System z devices, enabling communication between the mainframe and external networks.
A NULL dereference occurs when a program attempts to access or manipulate memory using a null pointer, leading to unexpected behavior or crashes.
The impact of this vulnerability is currently unknown, as the actual attack plausibility and consequences have not been proven.
To fix this vulnerability, it is recommended to update the Linux Kernel package to version v5.10.70 or later, which includes the necessary fix.
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