Bug 2424936 (CVE-2023-54015)

Summary: CVE-2023-54015 kernel: net/mlx5: Devcom, fix error flow in mlx5_devcom_register_device
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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OS: Linux   
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Description OSIDB Bzimport 2025-12-24 12:01:54 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net/mlx5: Devcom, fix error flow in mlx5_devcom_register_device

In case devcom allocation is failed, mlx5 is always freeing the priv.
However, this priv might have been allocated by a different thread,
and freeing it might lead to use-after-free bugs.
Fix it by freeing the priv only in case it was allocated by the
running thread.
Comment 1 Alexander B 2025-12-25 14:39:15 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122431-CVE-2023-54015-13a3@gregkh/T