# CVE-2023-54168: linux: In the Linux kernel, the following vulnerability has been resolved:  RDMA/mlx4: Prevent shift wrapping in set_user_sq...

CVE-2023-54168 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-54168, released December 30, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-54168
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 30, 2025

## 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()").

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.37-1 | [DEBIAN-CVE-2023-54168](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54168.md) | Dec 30, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-54168](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54168.md) | Dec 30, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-54168](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54168.md) | Dec 30, 2025 |

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