CVE-2026-53230

A flaw was found in the Linux kernel's mlx5 driver. The mlx5_query_nic_vport_mac_list function, which handles querying network interface card (NIC) virtual port (vport) MAC addresses, incorrectly sizes its internal buffer. When a Virtual Function (VF) vport is queried with a larger configured maximum, the firmware response can overflow this buffer. This leads to a memory corruption issue, specifically a slab-out-of-bounds error, which could potentially be exploited by an attacker to cause a denial of service or other system instability.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.