{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-46750",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-46750"
  ],
  "published": "2024-09-18T07:17:19Z",
  "summary": "PCI: Add missing bridge lock to pci_bus_lock()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: Add missing bridge lock to pci_bus_lock()\n\nOne of the true positives that the cfg_access_lock lockdep effort\nidentified is this sequence:\n\n  WARNING: CPU: 14 PID: 1 at drivers/pci/pci.c:4886 pci_bridge_secondary_bus_reset+0x5d/0x70\n  RIP: 0010:pci_bridge_secondary_bus_reset+0x5d/0x70\n  Call Trace:\n   <TASK>\n   ? __warn+0x8c/0x190\n   ? pci_bridge_secondary_bus_reset+0x5d/0x70\n   ? report_bug+0x1f8/0x200\n   ? handle_bug+0x3c/0x70\n   ? exc_invalid_op+0x18/0x70\n   ? asm_exc_invalid_op+0x1a/0x20\n   ? pci_bridge_secondary_bus_reset+0x5d/0x70\n   pci_reset_bus+0x1d8/0x270\n   vmd_probe+0x778/0xa10\n   pci_device_probe+0x95/0x120\n\nWhere pci_reset_bus() users are triggering unlocked secondary bus resets.\nIronically pci_bus_reset(), several calls down from pci_reset_bus(), uses\npci_bus_lock() before issuing the reset which locks everything *but* the\nbridge itself.\n\nFor the same motivation as adding:\n\n  bridge = pci_upstream_bridge(dev);\n  if (bridge)\n    pci_dev_lock(bridge);\n\nto pci_reset_function() for the \"bus\" and \"cxl_bus\" reset cases, add\npci_dev_lock() for @bus->self to pci_bus_lock().\n\n[bhelgaas: squash in recursive locking deadlock fix from Keith Busch:\nhttps://lore.kernel.org/r/20240711193650.701834-1-kbusch@meta.com]",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
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        "1:6.1.47-1+rpt2",
        "1:6.1.47-1+rpt4",
        "1:6.1.54-1+rpt2",
        "1:6.1.58-1+rpt2",
        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1",
        "1:6.6.20-1+rpt1",
        "1:6.6.28-1+rpt1",
        "1:6.6.31-1+rpt1",
        "1:6.6.47-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
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            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7l",
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            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi2-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt2"
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            "binary_version": "1:6.1.47-1+rpt4"
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            "binary_version": "1:6.1.54-1+rpt2"
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            "binary_version": "1:6.1.63-1+rpt1"
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            "binary_name": "linux-image-6.1.0-rpi8-rpi-2712",
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      "database_specific": {
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-46750"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0790b89c7e911003b8c50ae50e3ac7645de1fae9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/df77a678c33871a6e4ac5b54a71662f1d702335b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e2355d513b89a2cb511b4ded0deb426cdb01acd0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7253b4fed46471cc247c6cacefac890a8472c083"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/78c6e39fef5c428960aff742149bba302dd46f5a"
    },
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      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/81c68e218ab883dfa368460a59b674084c0240da"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a4e772898f8bf2e7e1cf661a12c60a5612c4afab"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:52:36Z"
  }
}