CVE-2026-72006

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: free mlx5_st_idx_data on final dealloc Workloads that repeatedly allocate and release mkeys carrying TPH steering-tag hints (e.g. churning RDMA MRs) leak one struct mlx5_st_idx_data per cycle; kmemleak flags it as unreferenced and the kmalloc slab grows over time. When the last reference to an ST table entry is dropped, mlx5_st_dealloc_index() removed the entry from idx_xa but the backing mlx5_st_idx_data allocation was never freed. Free idx_data after the xa_erase() so the lifetime of the bookkeeping struct matches the lifetime of the ST entry it tracks.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/262da8b6ea03d01ee7ed01ad309e4c89941f6b14
https://git.kernel.org/stable/c/6eb4cf2fa8997f62c11e0006dc010a1fd89c5a75
https://git.kernel.org/stable/c/df6134b527a88b3e65ba6ae5073664af091d5fd2

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:20

Updated : 2026-08-17 06:17

NVD link : CVE-2026-72006

Mitre link : CVE-2026-72006

CVE.ORG link : CVE-2026-72006

JSON object : View

Products Affected

No product.

CWE

No CWE.

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