CVE-2026-97948 (GCVE-0-2026-97948)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:22 – Updated: 2026-09-25 10:22
VLAI
Title
powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver
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).
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d2c60a8a387e9fcc28447ef36c03f8e49fd052a6 , < 102e3dc5ab5ba052e294819e83384166b242c1ec (git)
Affected: 1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 , < 2920af33d097ca335e492b346af70b72986ad6dc (git)
Affected: 1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 , < 85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4 (git)
Affected: 1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 , < c5e68706527968282e49de205cc2b935823cb88a (git)
Affected: 502f08831a9afb72dc98a56ae6504da43e93b250 (git)
Affected: f56e004b781719d8fdf6c9619b15caf2579bc1f2 (git)
Affected: 59c6d3d81d42bf543c90597b4f38c53d6874c5a1 (git)
Affected: a426e8a6ae161f51888585b065db0f8f93ab2e16 (git)
Affected: d42bbd8f30ac38b1ce54715bf08ec3dac18d6b25 (git)
Affected: 19d5036e7ad766cf212aebec23b9f1d7924a62bc (git)
Affected: 6.12.42 , < 6.12.111 (semver)
Affected: 5.10.241 , < 5.11 (semver)
Affected: 5.15.190 , < 5.16 (semver)
Affected: 6.1.148 , < 6.2 (semver)
Affected: 6.6.102 , < 6.7 (semver)
Affected: 6.15.10 , < 6.16 (semver)
Affected: 6.16.1 , < 6.17 (semver)
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Linux Linux Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2.7 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix)
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          "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)."
        }
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          "url": "https://git.kernel.org/stable/c/c5e68706527968282e49de205cc2b935823cb88a"
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    "dateReserved": "2026-09-25T10:18:58.204Z",
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      "cve": "CVE-2026-97948",
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      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-97948.json",
      "version": "2"
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            "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"
          },
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2920af33d097ca335e492b346af70b72986ad6dc"
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          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4"
          },
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            "url": "https://git.kernel.org/stable/c/c5e68706527968282e49de205cc2b935823cb88a"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}



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