Bug 2426158 (CVE-2023-54168) - CVE-2023-54168 kernel: RDMA/mlx4: Prevent shift wrapping in set_user_sq_size()
Summary: CVE-2023-54168 kernel: RDMA/mlx4: Prevent shift wrapping in set_user_sq_size()
Keywords:
Status: NEW
Alias: CVE-2023-54168
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-30 13:13 UTC by OSIDB Bzimport
Modified: 2025-12-31 04:59 UTC (History)
0 users

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Description OSIDB Bzimport 2025-12-30 13:13:06 UTC 
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()").
Comment 1 Alexander B 2025-12-31 04:55:43 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123020-CVE-2023-54168-eba2@gregkh/T
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