Bug 2426227 (CVE-2023-54169)

Summary: CVE-2023-54169 kernel: net/mlx5e: fix memory leak in mlx5e_ptp_open
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the Linux kernel net/mlx5e Ethernet driver’s mlx5e_ptp_open function. When memory allocation via kvzalloc_node() or kvzalloc() fails, previously allocated resources (c or cparams) were not properly freed, leading to a memory leak in the error path. An unprivileged local user interacting with the networking subsystem might trigger this condition, causing gradual memory consumption.
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Description OSIDB Bzimport 2025-12-30 13:17:51 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net/mlx5e: fix memory leak in mlx5e_ptp_open

When kvzalloc_node or kvzalloc failed in mlx5e_ptp_open, the memory
pointed by "c" or "cparams" is not freed, which can lead to a memory
leak. Fix by freeing the array in the error path.
Comment 1 Alexander B 2025-12-30 23:51:45 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123020-CVE-2023-54169-21bb@gregkh/T