parisc: Fix data TLB miss in sba_unmap_sg
Summary
GSD-2022-1000387: parisc: Fix data TLB miss in sba_unmap_sg. Affects Kernel versions < f8f519d7df66c334b5e08f896ac70ee3b53add3b. 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 pertains to the parisc architecture, which is used in Hewlett-Packard's PA-RISC workstations and servers. The sba_unmap_sg function in the parisc package is used to unmap scatter-gather memory regions from the system's data Translation Lookaside Buffer (TLB).
Vulnerability Detail
The vulnerability in the parisc package arises from a data TLB miss in the sba_unmap_sg function. This can lead to incorrect memory mappings and potential security issues. 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 v5.10.102 by commit f8f519d7df66c334b5e08f896ac70ee3b53add3b.
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 has been fixed in the Linux Kernel version v5.10.102. It is recommended to update the kernel to the latest version to mitigate the risk. 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 supports the parisc architecture used in Hewlett-Packard's PA-RISC workstations and servers.
The sba_unmap_sg function is a part of the parisc package and is used to unmap scatter-gather memory regions from the system's data Translation Lookaside Buffer (TLB).
A data TLB miss refers to a situation where the Translation Lookaside Buffer (TLB) does not contain the required mapping for a memory access, leading to a performance penalty and potential security issues.
The impact of this vulnerability is not yet proven. However, it could potentially lead to incorrect memory mappings and security vulnerabilities.
To fix this vulnerability, update the Linux Kernel to version v5.10.102 or later by pulling the latest changes from the official Linux Kernel repository and recompiling the kernel.
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