parisc: Fix data TLB miss in sba_unmap_sg
Summary
GSD-2022-1000323: parisc: Fix data TLB miss in sba_unmap_sg. Affects Kernel versions < 867e50231c7605547d9334904d70a181f39f2d9e. No fix is published. How to fix ↓
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Background
The parisc package is a component of the Linux Kernel, which is responsible for managing the hardware and software resources of the system. It specifically targets the PA-RISC architecture. The sba_unmap_sg function within the parisc package is used to unmap a scatter-gather list (SG) from the system's memory. This function is vulnerable to a data TLB miss, which can lead to potential security issues.
Vulnerability Detail
The vulnerability in the sba_unmap_sg function of the parisc package arises from a data TLB miss. This can result in incorrect memory mappings and potentially allow an attacker to gain unauthorized access to sensitive information or 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 v4.19.231 by commit 867e50231c7605547d9334904d70a181f39f2d9e.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The parisc package in the Linux Kernel is vulnerable to a data TLB miss in the sba_unmap_sg function. This vulnerability can potentially lead to unauthorized access or code execution. It is crucial to update the Linux Kernel to version v4.19.231 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The parisc package is a component of the Linux Kernel that targets the PA-RISC architecture. It is responsible for managing the hardware and software resources of the system.
The sba_unmap_sg function is part of the parisc package and is used to unmap a scatter-gather list (SG) from the system's memory.
A data TLB miss refers to a situation where the Translation Lookaside Buffer (TLB) does not contain the required mapping for a memory access. This can result in incorrect memory mappings and potential security vulnerabilities.
This vulnerability can allow an attacker to gain unauthorized access to sensitive information or execute arbitrary code by exploiting the data TLB miss in the sba_unmap_sg function.
Yes, this vulnerability has been fixed in the Linux Kernel version v4.19.231 by commit 867e50231c7605547d9334904d70a181f39f2d9e.
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