{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-53811",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53811",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-09T00:01:09.005Z",
    "updatedAt": "2026-05-11T19:51:58.073Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "RDMA/irdma: Cap MSIX used to online CPUs + 1",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Cap MSIX used to online CPUs + 1\n\nThe irdma driver can use a maximum number of msix vectors equal\nto num_online_cpus() + 1 and the kernel warning stack below is shown\nif that number is exceeded.\n\nThe kernel throws a warning as the driver tries to update the affinity\nhint with a CPU mask greater than the max CPU IDs. Fix this by capping\nthe MSIX vectors to num_online_cpus() + 1.\n\n WARNING: CPU: 7 PID: 23655 at include/linux/cpumask.h:106 irdma_cfg_ceq_vector+0x34c/0x3f0 [irdma]\n RIP: 0010:irdma_cfg_ceq_vector+0x34c/0x3f0 [irdma]\n Call Trace:\n irdma_rt_init_hw+0xa62/0x1290 [irdma]\n ? irdma_alloc_local_mac_entry+0x1a0/0x1a0 [irdma]\n ? __is_kernel_percpu_address+0x63/0x310\n ? rcu_read_lock_held_common+0xe/0xb0\n ? irdma_lan_unregister_qset+0x280/0x280 [irdma]\n ? irdma_request_reset+0x80/0x80 [irdma]\n ? ice_get_qos_params+0x84/0x390 [ice]\n irdma_probe+0xa40/0xfc0 [irdma]\n ? rcu_read_lock_bh_held+0xd0/0xd0\n ? irdma_remove+0x140/0x140 [irdma]\n ? rcu_read_lock_sched_held+0x62/0xe0\n ? down_write+0x187/0x3d0\n ? auxiliary_match_id+0xf0/0x1a0\n ? irdma_remove+0x140/0x140 [irdma]\n auxiliary_bus_probe+0xa6/0x100\n __driver_probe_device+0x4a4/0xd50\n ? __device_attach_driver+0x2c0/0x2c0\n driver_probe_device+0x4a/0x110\n __driver_attach+0x1aa/0x350\n bus_for_each_dev+0x11d/0x1b0\n ? subsys_dev_iter_init+0xe0/0xe0\n bus_add_driver+0x3b1/0x610\n driver_register+0x18e/0x410\n ? 0xffffffffc0b88000\n irdma_init_module+0x50/0xaa [irdma]\n do_one_initcall+0x103/0x5f0\n ? perf_trace_initcall_level+0x420/0x420\n ? do_init_module+0x4e/0x700\n ? __kasan_kmalloc+0x7d/0xa0\n ? kmem_cache_alloc_trace+0x188/0x2b0\n ? kasan_unpoison+0x21/0x50\n do_init_module+0x1d1/0x700\n load_module+0x3867/0x5260\n ? layout_and_allocate+0x3990/0x3990\n ? rcu_read_lock_held_common+0xe/0xb0\n ? rcu_read_lock_sched_held+0x62/0xe0\n ? rcu_read_lock_bh_held+0xd0/0xd0\n ? __vmalloc_node_range+0x46b/0x890\n ? lock_release+0x5c8/0xba0\n ? alloc_vm_area+0x120/0x120\n ? selinux_kernel_module_from_file+0x2a5/0x300\n ? __inode_security_revalidate+0xf0/0xf0\n ? __do_sys_init_module+0x1db/0x260\n __do_sys_init_module+0x1db/0x260\n ? load_module+0x5260/0x5260\n ? do_syscall_64+0x22/0x450\n do_syscall_64+0xa5/0x450\n entry_SYSCALL_64_after_hwframe+0x66/0xdb",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "44d9e52977a1b90b0db1c7f8b197c218e9226520",
              "status": "affected",
              "versionType": "git",
              "lessThan": "87674a359ad173a3b8cd484e92e4f1901666da4c"
            },
            {
              "version": "44d9e52977a1b90b0db1c7f8b197c218e9226520",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b3bd44bf20cb3a6a47aa4373e1817147efb4be04"
            },
            {
              "version": "44d9e52977a1b90b0db1c7f8b197c218e9226520",
              "status": "affected",
              "versionType": "git",
              "lessThan": "209e4aa9a7b636d8aaa1297e1d089ee2ed91d73f"
            },
            {
              "version": "44d9e52977a1b90b0db1c7f8b197c218e9226520",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9cd9842c46996ef62173c36619c746f57416bcb0"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.14",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.14"
            },
            {
              "version": "5.15.99",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.16",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "version": "6.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}