{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"
            },
            {
              "fixed": "4536667fba8ddbaff2f2a135080ae6aabf737b5e"
            },
            {
              "fixed": "fc2233f1ab2a1ca562869bca6987d7477671388c"
            },
            {
              "fixed": "f48763beab4eea41fc480c9702ec6eebe8d75e4f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.12"
            },
            {
              "fixed": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93815.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: au1000: move free_irq out of the close-time spinlocked section\n\nau1000_close() calls free_irq() while aup-\u003elock is still held with\nspin_lock_irqsave(). free_irq() can sleep because it takes the IRQ\ndescriptor request mutex, so it does not belong inside the close-time\nspinlocked section.\n\nThis was found by our static analysis tool and then confirmed by manual\nreview of the in-tree au1000_close() .ndo_stop path. The reviewed path\nkeeps aup-\u003elock held across the MAC reset, queue stop and\nfree_irq(dev-\u003eirq, dev).\n\nA directed runtime validation kept that ndo_stop carrier and the same\nfree_irq(dev-\u003eirq, dev) operation under the driver lock. Lockdep reported\n\"BUG: sleeping function called from invalid context\" and \"Invalid wait\ncontext\" while free_irq() was taking desc-\u003erequest_mutex, with\nau1000_close() and free_irq() on the stack.\n\nDrop aup-\u003elock before freeing the IRQ. The protected close-time work still\nstops the device and queue before IRQ teardown, but the sleepable IRQ core\npath now runs outside the spinlocked section.",
  "id": "CVE-2026-93815",
  "modified": "2026-09-27T03:30:59.489731618Z",
  "published": "2026-09-24T16:02:52.078Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4536667fba8ddbaff2f2a135080ae6aabf737b5e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f48763beab4eea41fc480c9702ec6eebe8d75e4f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc2233f1ab2a1ca562869bca6987d7477671388c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93815.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93815"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net: au1000: move free_irq out of the close-time spinlocked section"
}