Shift-out-of-bound Vulnerability in nvmem Package
Summary
GSD-2021-1001914: nvmem: Fix shift-out-of-bound (UBSAN) with byte size cells. Affects Kernel versions >= 69aba7948cbe53f2f1827e84e9dd0ae470a5072e, < abcb8d33e4d2215ccde5ab5ccf9f730a59d79d97. No fix is published. How to fix ↓
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Background
The nvmem package is a component of the Linux Kernel ecosystem. It provides an interface for accessing non-volatile memory devices. Non-volatile memory (NVM) is a type of computer memory that can retain stored information even when power is removed. The nvmem package allows applications to read from and write to NVM devices. It is an essential component for various functionalities in the Linux Kernel.
Vulnerability Detail
The identified vulnerability in the nvmem package is related to a shift-out-of-bound issue. This vulnerability can lead to undefined behavior and potential security risks. The issue arises when byte size cells are used, causing a shift operation to go beyond the bounds of the allocated memory. This vulnerability was introduced in version v4.3 of the Linux Kernel and was fixed in version v4.4.290. 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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Workaround
There is no specific workaround mentioned for this vulnerability. The recommended approach is to apply the fix by updating the Linux Kernel to the patched version.
Conclusion
The shift-out-of-bound vulnerability in the nvmem package of the Linux Kernel can lead to undefined behavior and potential security risks. It is crucial to update the Kernel to version v4.4.290 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The nvmem package is a component of the Linux Kernel that provides an interface for accessing non-volatile memory devices.
Non-volatile memory is a type of computer memory that can retain stored information even when power is removed.
The impact of this vulnerability is currently unknown. It is important to update the Linux Kernel to mitigate any potential security risks.
To fix this vulnerability, update the Linux Kernel to version v4.4.290 or later.
There is no specific workaround mentioned for this vulnerability. Updating the Kernel is the recommended approach.
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