{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-93815",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-93815"
  ],
  "published": "2026-09-24T16:08:25Z",
  "summary": "net: au1000: move free_irq out of the close-time spinlocked section",
  "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->lock 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->lock held across the MAC reset, queue stop and\nfree_irq(dev->irq, dev).\n\nA directed runtime validation kept that ndo_stop carrier and the same\nfree_irq(dev->irq, 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->request_mutex, with\nau1000_close() and free_irq() on the stack.\n\nDrop aup->lock 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.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.189",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-93815"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f86bca5b7857b85bfa8afdb4fa895d7c0a3f7ebc"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/26fd652915123a690f19d62b253b545a53f3cd51"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d514b08ed61fdffe23604fd3e9e53c07cbe5ac3e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e1b5a13249975fec3cf654efa84f57118db2da2c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4536667fba8ddbaff2f2a135080ae6aabf737b5e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fc2233f1ab2a1ca562869bca6987d7477671388c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f48763beab4eea41fc480c9702ec6eebe8d75e4f"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-03T11:04:09Z"
  }
}