{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.94-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.13-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  net/mlx5: Fix slab-out-of-bounds in mlx5_query_nic_vport_mac_list  mlx5_query_nic_vport_mac_list() sizes its firmware command buffer using the PF's log_max_current_uc/mc_list capabilities. When querying a VF vport with a larger configured max (via devlink), the firmware response can overflow this buffer:   BUG: KASAN: slab-out-of-bounds in mlx5_query_nic_vport_mac_list+0x453/0x4c0 [mlx5_core]  Read of size 4 at addr ff1100013ffc8a12 by task kworker/u96:2/385   CPU: 12 UID: 0 PID: 385 Comm: kworker/u96:2 Not tainted 7.0.0-rc6+ #1 PREEMPT  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009)  Workqueue: mlx5_esw_wq esw_vport_change_handler [mlx5_core]  Call Trace:   \u003cTASK\u003e   dump_stack_lvl+0x69/0xa0   print_report+0x176/0x4e4   kasan_report+0xc8/0x100   mlx5_query_nic_vport_mac_list+0x453/0x4c0 [mlx5_core]   esw_update_vport_addr_list+0x2e3/0xda0 [mlx5_core]   esw_vport_change_handle_locked+0xa1f/0x1060 [mlx5_core]   esw_vport_change_handler+0x6a/0x90 [mlx5_core]   process_one_work+0x87f/0x15e0   worker_thread+0x62b/0x1020   kthread+0x375/0x490   ret_from_fork+0x4dc/0x810   ret_from_fork_asm+0x11/0x20   \u003c/TASK\u003e  Fix by querying the vport's own HCA caps to size the buffer correctly. Refactor the function to allocate and return the MAC list internally, removing the caller's dependency on knowing the correct max.",
  "id": "DEBIAN-CVE-2026-53230",
  "modified": "2026-09-14T16:47:36.885239797Z",
  "published": "2026-06-25T09:16:40.907Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-53230"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-53230"
  ]
}