{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "13abb2b11ac3b6cb89822f152e770081893e4bc3"
            },
            {
              "fixed": "3cc90ea0dd0fb1f8db577dcdc027fc46c06049f6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0d2a64411b0974a469ff56e62441055147e5a194"
            },
            {
              "fixed": "5d95f6b267f3d7fe54f42a3b224bb4a3d3990b41"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "c93859a52b0d6953cdaa17fd7fb46a6871b015cf"
            },
            {
              "fixed": "27335c50014102e9077b784ebd314954286afcab"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "a460935022f512e167b4c5d4c12d85f89ba6aabd"
            },
            {
              "fixed": "44b8b03a9fb5c575548fc72c674653d6baba142a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "06e0ae988f6e3499785c407429953ade19c1096b"
            },
            {
              "fixed": "7bc71bdb1c1526c7f02a6adab324394ff1327b0a"
            },
            {
              "fixed": "0d046ae106255cba5eb83b23f78ee93f3620247d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53326.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndebugobjects: Don't call fill_pool() in early boot hardirq context\n\nWhen booting a debug PREEMPT_RT kernel on an ARM64 system, a \"inconsistent\n{HARDIRQ-ON-W} -\u003e {IN-HARDIRQ-W} usage\" lockdep warning message was\nreported to the console.\n\nDuring early boot, interrupts are enabled before the scheduler is\nenabled. In this window (before SYSTEM_SCHEDULING is set) interrupts can\nfire and in the hard interrupt context handler attempt to fill the pool\n\nThis can lead to a deadlock when the interrupt occurred when the interrupt\nhits a region which holds a lock that is required to be taken in the\nallocation path.\n\nAdd a new can_fill_pool() helper and reorder the exception rule and forbid\nthis scenario by excluding allocations from hard interrupt context.",
  "id": "CVE-2026-53326",
  "modified": "2026-07-08T05:38:13.135673132Z",
  "published": "2026-07-01T13:32:12.924Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d046ae106255cba5eb83b23f78ee93f3620247d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/27335c50014102e9077b784ebd314954286afcab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3cc90ea0dd0fb1f8db577dcdc027fc46c06049f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/44b8b03a9fb5c575548fc72c674653d6baba142a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d95f6b267f3d7fe54f42a3b224bb4a3d3990b41"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7bc71bdb1c1526c7f02a6adab324394ff1327b0a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53326.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53326"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "debugobjects: Don't call fill_pool() in early boot hardirq context"
}