{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-26605",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-26605"
  ],
  "published": "2024-02-24T15:17:29Z",
  "summary": "PCI/ASPM: Fix deadlock when enabling ASPM",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/ASPM: Fix deadlock when enabling ASPM\n\nA last minute revert in 6.7-final introduced a potential deadlock when\nenabling ASPM during probe of Qualcomm PCIe controllers as reported by\nlockdep:\n\n  ============================================\n  WARNING: possible recursive locking detected\n  6.7.0 #40 Not tainted\n  --------------------------------------------\n  kworker/u16:5/90 is trying to acquire lock:\n  ffffacfa78ced000 (pci_bus_sem){++++}-{3:3}, at: pcie_aspm_pm_state_change+0x58/0xdc\n\n              but task is already holding lock:\n  ffffacfa78ced000 (pci_bus_sem){++++}-{3:3}, at: pci_walk_bus+0x34/0xbc\n\n              other info that might help us debug this:\n   Possible unsafe locking scenario:\n\n         CPU0\n         ----\n    lock(pci_bus_sem);\n    lock(pci_bus_sem);\n\n               *** DEADLOCK ***\n\n  Call trace:\n   print_deadlock_bug+0x25c/0x348\n   __lock_acquire+0x10a4/0x2064\n   lock_acquire+0x1e8/0x318\n   down_read+0x60/0x184\n   pcie_aspm_pm_state_change+0x58/0xdc\n   pci_set_full_power_state+0xa8/0x114\n   pci_set_power_state+0xc4/0x120\n   qcom_pcie_enable_aspm+0x1c/0x3c [pcie_qcom]\n   pci_walk_bus+0x64/0xbc\n   qcom_pcie_host_post_init_2_7_0+0x28/0x34 [pcie_qcom]\n\nThe deadlock can easily be reproduced on machines like the Lenovo ThinkPad\nX13s by adding a delay to increase the race window during asynchronous\nprobe where another thread can take a write lock.\n\nAdd a new pci_set_power_state_locked() and associated helper functions that\ncan be called with the PCI bus semaphore held to avoid taking the read lock\ntwice.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.73-1+rpt1",
        "1:6.6.20-1+rpt1",
        "1:6.6.28-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi8-rpi-2712",
            "binary_version": "1:6.1.73-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi8-rpi-v6",
            "binary_version": "1:6.1.73-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi8-rpi-v7",
            "binary_version": "1:6.1.73-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi8-rpi-v7l",
            "binary_version": "1:6.1.73-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi8-rpi-v8",
            "binary_version": "1:6.1.73-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.20+rpt-rpi-2712",
            "binary_version": "1:6.6.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.20+rpt-rpi-v6",
            "binary_version": "1:6.6.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.20+rpt-rpi-v7",
            "binary_version": "1:6.6.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.20+rpt-rpi-v7l",
            "binary_version": "1:6.6.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.20+rpt-rpi-v8",
            "binary_version": "1:6.6.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.28+rpt-rpi-2712",
            "binary_version": "1:6.6.28-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.28+rpt-rpi-v6",
            "binary_version": "1:6.6.28-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.28+rpt-rpi-v7",
            "binary_version": "1:6.6.28-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.28+rpt-rpi-v7l",
            "binary_version": "1:6.6.28-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.28+rpt-rpi-v8",
            "binary_version": "1:6.6.28-1+rpt1"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.73-1+rpt1": {
            "linux_commit": null,
            "upstream_version": "6.1.73",
            "assessment": "upstream version (no usable Linux commit)",
            "upstream_fixed": "6.1.88"
          },
          "1:6.6.20-1+rpt1": {
            "linux_commit": "6f16847710cc0502450788b9f12f0a14d3429668",
            "upstream_version": "6.6.20",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.29"
          },
          "1:6.6.28-1+rpt1": {
            "linux_commit": "0c341f47adc3578cd5f817aa20ee2b7f9ae6b23e",
            "upstream_version": "6.6.28",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.29"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-26605"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0f7908a016c092cfdaa16d785fa5099d867bc1a3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b0f4478838be1f1d330061201898fef65bf8fd7c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ef90508574d7af48420bdc5f7b9a4f1cdd26bc70"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1e560864159d002b453da42bd2c13a1805515a20"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}