RDMA/irdma: Cap MSIX used to online CPUs + 1

{
  "id": "ba4a3ab7f6980408a72c681290eff35d9bee7594cf14dfa022637b6a7e342da0",
  "url": "https://osv.dev/vulnerability/CVE-2023-53811",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "RDMA/irdma: Cap MSIX used to online CPUs + 1",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Cap MSIX used to online CPUs + 1 The irdma driver can use a maximum number of msix vectors equal to num_online_cpus() + 1 and the kernel warning stack below is shown if that number is exceeded. The kernel throws a warning as the driver tries to update the affinity hint with a CPU mask greater than the max CPU IDs. Fix this by capping the MSIX vectors to num_online_cpus() + 1. WARNING: CPU: 7 PID: 23655 at include/linux/cpumask.h:106 irdma_cfg_ceq_vector+0x34c/0x3f0 [irdma] RIP: 0010:irdma_cfg_ceq_vector+0x34c/0x3f0 [irdma] Call Trace: irdma_rt_init_hw+0xa62/0x1290 [irdma] ? irdma_alloc_local_mac_entry+0x1a0/0x1a0 [irdma] ? __is_kernel_percpu_address+0x63/0x310 ? rcu_read_lock_held_common+0xe/0xb0 ? irdma_lan_unregister_qset+0x280/0x280 [irdma] ? irdma_request_reset+0x80/0x80 [irdma] ? ice_get_qos_params+0x84/0x390 [ice] irdma_probe+0xa40/0xfc0 [irdma] ? rcu_read_lock_bh_held+0xd0/0xd0 ? irdma_remove+0x140/0x140 [irdma] ? rcu_read_lock_sched_held+0x62/0xe0 ? down_write+0x187/0x3d0 ? auxiliary_match_id+0xf0/0x1a0 ? irdma_remove+0x140/0x140 [irdma] auxiliary_bus_probe+0xa6/0x100 __driver_probe_device+0x4a4/0xd50 ? __device_attach_driver+0x2c0/0x2c0 driver_probe_device+0x4a/0x110 __driver_attach+0x1aa/0x350 bus_for_each_dev+0x11d/0x1b0 ? subsys_dev_iter_init+0xe0/0xe0 bus_add_driver+0x3b1/0x610 driver_register+0x18e/0x410 ? 0xffffffffc0b88000 irdma_init_module+0x50/0xaa [irdma] do_one_initcall+0x103/0",
    "evidence": "osv:CVE-2023-53811",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.99",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-53811",
      "aliases": [
        "CVE-2023-53811"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "44d9e52977a1b90b0db1c7f8b197c218e9226520"
                },
                {
                  "fixed": "87674a359ad173a3b8cd484e92e4f1901666da4c"
                },
                {
                  "fixed": "b3bd44bf20cb3a6a47aa4373e1817147efb4be04"
                },
                {
                  "fixed": "209e4aa9a7b636d8aaa1297e1d089ee2ed91d73f"
                },
                {
                  "fixed": "9cd9842c46996ef62173c36619c746f57416bcb0"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53811.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.14.0"
                },
                {
                  "fixed": "5.15.99"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.16"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53811.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.779473238Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/209e4aa9a7b636d8aaa1297e1d089ee2ed91d73f",
        "https://git.kernel.org/stable/c/87674a359ad173a3b8cd484e92e4f1901666da4c",
        "https://git.kernel.org/stable/c/9cd9842c46996ef62173c36619c746f57416bcb0",
        "https://git.kernel.org/stable/c/b3bd44bf20cb3a6a47aa4373e1817147efb4be04",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53811.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53811",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53811.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53811",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 508675,
  "published_at": "2025-12-09T00:01:09.005+00:00"
}