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Review reviewHigh

CVE-2023-54168

Linux

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()").

CVSS
7.8
EPSS
0.13%
3.33% percentile
CISA KEV
Not listed
Published
2025.12.30
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.13%
Technical severityCVSS 7.8

Vulnerability overview

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()").

Affected product and versions

Product
Linux
Affected versions
>= 839041329fd3410e07d614f81e75bb43367d8f89 < 3d5ae269c4bd392ec1edbfb3bd031b8f42d7feff, >= 839041329fd3410e07d614f81e75bb43367d8f89 < 8feca625900777e02a449e53fe4121339934c38a, >= 839041329fd3410e07d614f81e75bb43367d8f89 < 9ad3221c86cc9c6305594b742d4a72dfbd4ea579, >= 839041329fd3410e07d614f81e75bb43367d8f89 < 9911be2155720221a4f1f722b22bd0e2388d8bcf, >= 839041329fd3410e07d614f81e75bb43367d8f89 < 3ce0df3493277b9df275cb8455d9c677ae701230, >= 839041329fd3410e07d614f81e75bb43367d8f89 < 196a6df08b08699ace4ce70e1efcdd9081b6565f, >= 839041329fd3410e07d614f81e75bb43367d8f89 < a183905869e692b6b7805b7472235585eff8e429, >= 839041329fd3410e07d614f81e75bb43367d8f89 < d50b3c73f1ac20dabc53dc6e9d64ce9c79a331eb, >= 2.6.24
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available