CVE-2023-54168
Unknown Unknown - Not Provided
Integer Overflow Vulnerability in Linux RDMA mlx4 Driver

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx4: Prevent shift wrapping in set_user_sq_size() The ucmd->log_sq_bb_count variable is controlled by the user so this shift can wrap. Fix it by using check_shl_overflow() in the same way that it was done in commit 515f60004ed9 ("RDMA/hns: Prevent undefined behavior in hns_roce_set_user_sq_size()").
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Meta Information
Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-06-16
AI Q&A
2025-12-30
EPSS Evaluated
2026-06-15
NVD
CVE-2023-54168
EUVD
EUVD-2023-60473
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability involves a shift operation in the Linux kernel's RDMA/mlx4 driver where the variable 'ucmd->log_sq_bb_count', which is controlled by the user, can cause a shift wrapping issue. This means that the shift operation can overflow or wrap around, potentially leading to undefined or unintended behavior. The fix involves using a function called check_shl_overflow() to prevent this shift wrapping, similar to a previous fix in another RDMA driver component.

Impact Analysis

The vulnerability could lead to undefined or unintended behavior in the Linux kernel's RDMA/mlx4 driver due to shift wrapping caused by user-controlled input. This might result in system instability, crashes, or potentially exploitable conditions depending on how the kernel handles the erroneous shift operation.

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