{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "9327a865e395a53f67dffac4710beb1d4730495e"
            },
            {
              "fixed": "9fcf4317384ce6758c3127a6e8914c54cbb9c8cc"
            },
            {
              "fixed": "327c428ba79b13e4cc5253333a9d5c0aa5579bdf"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.2.0"
            },
            {
              "fixed": "7.2.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98832.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: save IRQ state in blkg_tryget_closest()\n\nbio_set_dev() associates the bio with a blkg through bio_associate_blkg().\nIf the blkg lookup misses, blkg_tryget_closest() takes q-\u003equeue_lock with\nspin_lock_irq() and releases it with spin_unlock_irq(), which\nunconditionally enables local interrupts.\n\nCallers may call bio_set_dev() with interrupts already disabled, e.g.\ndm-thin's pool_map() does so while holding pool-\u003elock taken with\nspin_lock_irq().  The nested spin_unlock_irq() then enables interrupts\nwhile pool-\u003elock is still held, so an I/O completion softirq can run on\nthe same CPU, re-acquire pool-\u003elock (thin_endio(), or overwrite_endio()\n-\u003e complete_mapping_preparation()) and deadlock.  lockdep reports this\nas inconsistent SOFTIRQ-ON-W to IN-SOFTIRQ-W usage.\n\nCommit 3a762de55b4e (\"block: save irq state in blkg_lookup_create()\")\nfixed the same problem while the lock lived in blkg_lookup_create(), but\ncommit 9327a865e395 (\"blk-cgroup: don't nest queue_lock under rcu in\nblkg_lookup_create()\") moved the locking into blkg_tryget_closest() and\nreverted it to spin_lock_irq().\n\nSave and restore the caller's IRQ state instead.",
  "id": "CVE-2026-98832",
  "modified": "2026-10-20T02:30:18.579180266Z",
  "published": "2026-10-18T15:49:36.925Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/327c428ba79b13e4cc5253333a9d5c0aa5579bdf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9fcf4317384ce6758c3127a6e8914c54cbb9c8cc"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98832.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98832"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "blk-cgroup: save IRQ state in blkg_tryget_closest()"
}