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CVE-2023-53393 is an improper validation flaw in the Linux kernel RDMA mlx5 driver. When mlx5_ib_get_hw_stats() retrieves device-level statistics, it uses port_num=0 to denote the device and selects device counters accordingly, but previously forwarded the zero value into lower-level routines. Those routines assume a physical port number of at least 1. The invalid port value can lead to an invalid access and a supervisor-mode kernel page fault, producing a kernel oops. The correction normalizes the port number to 1 for device-status retrieval.
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A Linux kernel RDMA/mlx5 flaw in mlx5_ib_get_hw_stats device handling.
A Linux kernel RDMA/mlx5 issue in mlx5_ib_get_hw_stats when used for a device.
Linux kernel RDMA/mlx5 flaw in mlx5_ib_get_hw_stats when it is used for a device.
Linux kernel RDMA mlx5 driver flaw in mlx5_ib_get_hw_stats when used for a device.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.