FKIE_CVE-2026-97948

Vulnerability from fkie_nvd - Published: 2026-09-25 11:17 - Updated: 2026-09-25 11:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver The commit 1010b4c012b0 ("powerpc/eeh: Make EEH driver device hotplug safe") refactored the EEH code such that the pci_rescan_remove_lock is held at the beginning of eeh_handle_normal_event() and the eeh_reset_device() is called with that lock being held. Looks like the commit missed to remove the existing lock/unlock inside eeh_rmv_device() which is no longer necessary. This is causing the eehd to hang on the lock which it actually holds when that code path is taken. [<0>] 0xc00000011c78f870 [<0>] __switch_to+0xfc/0x1a0 [<0>] pci_lock_rescan_remove+0x30/0x44 [<0>] eeh_rmv_device+0x290/0x2e0 [<0>] eeh_pe_dev_traverse+0x80/0x130 [<0>] eeh_reset_device+0xcc/0x23c [<0>] eeh_handle_normal_event+0x830/0xa80 [<0>] eeh_event_handler+0xf8/0x190 [<0>] kthread+0x194/0x1b0 [<0>] start_kernel_thread+0x14/0x18 The issue is seen for cases where the errors are detected on the PHB directly AND|OR for devices where the driver error_detected() returns PCI_ERS_RESULT_NEED_RESET, and driver being not EEH sensitive(i.e no error handlers like slot_reset(), resume() etc defined).
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/102e3dc5ab5ba052e294819e83384166b242c1ec
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2920af33d097ca335e492b346af70b72986ad6dc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c5e68706527968282e49de205cc2b935823cb88a
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/kernel/eeh_driver.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "102e3dc5ab5ba052e294819e83384166b242c1ec",
              "status": "affected",
              "version": "d2c60a8a387e9fcc28447ef36c03f8e49fd052a6",
              "versionType": "git"
            },
            {
              "lessThan": "2920af33d097ca335e492b346af70b72986ad6dc",
              "status": "affected",
              "version": "1010b4c012b0d78dfb9d3132b49aa2ef024a07a7",
              "versionType": "git"
            },
            {
              "lessThan": "85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4",
              "status": "affected",
              "version": "1010b4c012b0d78dfb9d3132b49aa2ef024a07a7",
              "versionType": "git"
            },
            {
              "lessThan": "c5e68706527968282e49de205cc2b935823cb88a",
              "status": "affected",
              "version": "1010b4c012b0d78dfb9d3132b49aa2ef024a07a7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "502f08831a9afb72dc98a56ae6504da43e93b250",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f56e004b781719d8fdf6c9619b15caf2579bc1f2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "59c6d3d81d42bf543c90597b4f38c53d6874c5a1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a426e8a6ae161f51888585b065db0f8f93ab2e16",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d42bbd8f30ac38b1ce54715bf08ec3dac18d6b25",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "19d5036e7ad766cf212aebec23b9f1d7924a62bc",
              "versionType": "git"
            },
            {
              "lessThan": "6.12.111",
              "status": "affected",
              "version": "6.12.42",
              "versionType": "semver"
            },
            {
              "lessThan": "5.11",
              "status": "affected",
              "version": "5.10.241",
              "versionType": "semver"
            },
            {
              "lessThan": "5.16",
              "status": "affected",
              "version": "5.15.190",
              "versionType": "semver"
            },
            {
              "lessThan": "6.2",
              "status": "affected",
              "version": "6.1.148",
              "versionType": "semver"
            },
            {
              "lessThan": "6.7",
              "status": "affected",
              "version": "6.6.102",
              "versionType": "semver"
            },
            {
              "lessThan": "6.16",
              "status": "affected",
              "version": "6.15.10",
              "versionType": "semver"
            },
            {
              "lessThan": "6.17",
              "status": "affected",
              "version": "6.16.1",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/kernel/eeh_driver.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/eeh: Fix recursive locking on devices without EEH sensitive driver\n\nThe commit 1010b4c012b0 (\"powerpc/eeh: Make EEH driver device hotplug\nsafe\") refactored the EEH code such that the pci_rescan_remove_lock is\nheld at the beginning of eeh_handle_normal_event() and the\neeh_reset_device() is called with that lock being held. Looks like the\ncommit missed to remove the existing lock/unlock inside eeh_rmv_device()\nwhich is no longer necessary. This is causing the eehd to hang on the\nlock which it actually holds when that code path is taken.\n\n[\u003c0\u003e] 0xc00000011c78f870\n[\u003c0\u003e] __switch_to+0xfc/0x1a0\n[\u003c0\u003e] pci_lock_rescan_remove+0x30/0x44\n[\u003c0\u003e] eeh_rmv_device+0x290/0x2e0\n[\u003c0\u003e] eeh_pe_dev_traverse+0x80/0x130\n[\u003c0\u003e] eeh_reset_device+0xcc/0x23c\n[\u003c0\u003e] eeh_handle_normal_event+0x830/0xa80\n[\u003c0\u003e] eeh_event_handler+0xf8/0x190\n[\u003c0\u003e] kthread+0x194/0x1b0\n[\u003c0\u003e] start_kernel_thread+0x14/0x18\n\nThe issue is seen for cases where the errors are detected on the PHB\ndirectly AND|OR for devices where the driver error_detected() returns\nPCI_ERS_RESULT_NEED_RESET, and driver being not EEH sensitive(i.e no\nerror handlers like slot_reset(), resume() etc defined)."
    }
  ],
  "id": "CVE-2026-97948",
  "lastModified": "2026-09-25T11:17:22.317",
  "metrics": {},
  "published": "2026-09-25T11:17:22.317",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/102e3dc5ab5ba052e294819e83384166b242c1ec"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2920af33d097ca335e492b346af70b72986ad6dc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c5e68706527968282e49de205cc2b935823cb88a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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