CVE-2026-97948

EEH recovery hang via recursive PCI locking

Published Sep 25, 2026 · Updated Sep 25, 2026

Denial of service in affected Linux kernel releases hangs the eehd thread during powerpc PCI error recovery on affected systems. The eeh_rmv_device function reacquires pci_rescan_remove_lock even though eeh_handle_normal_event already holds it, deadlocking the recovery path. The condition requires a PHB-level error or PCI_ERS_RESULT_NEED_RESET from a driver without EEH recovery handlers; public sources do not establish attacker-controlled triggering.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in affected Linux kernel releases hangs the eehd thread during powerpc PCI error recovery on affected systems. The eeh_rmv_device function reacquires pci_rescan_remove_lock even though eeh_handle_normal_event already holds it, deadlocking the recovery path. The condition requires a PHB-level error or PCI_ERS_RESULT_NEED_RESET from a driver without EEH recovery handlers; public sources do not establish attacker-controlled triggering.

The record

CVE
CVE-2026-97948
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 <2920af33d097ca335e492b346af70b72986ad6dc
  2. Affected versionversion=1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 <85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4
  3. Affected versionversion=1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 <c5e68706527968282e49de205cc2b935823cb88a
  4. Affected versionversion=19d5036e7ad766cf212aebec23b9f1d7924a62bc
  5. Affected versionversion=502f08831a9afb72dc98a56ae6504da43e93b250
  6. Affected versionversion=5.10.241 <5.11
  7. Affected versionversion=5.15.190 <5.16
  8. Affected versionversion=59c6d3d81d42bf543c90597b4f38c53d6874c5a1
  9. Affected versionversion=6.1.148 <6.2
  10. Affected versionversion=6.12.42 <6.12.111
  11. Affected versionversion=6.15.10 <6.16
  12. Affected versionversion=6.16.1 <6.17
  13. Affected versionversion=6.17
  14. Affected versionversion=6.6.102 <6.7
  15. Affected versionversion=a426e8a6ae161f51888585b065db0f8f93ab2e16
  16. Affected versionversion=d2c60a8a387e9fcc28447ef36c03f8e49fd052a6 <102e3dc5ab5ba052e294819e83384166b242c1ec
  17. Affected versionversion=d42bbd8f30ac38b1ce54715bf08ec3dac18d6b25
  18. Affected versionversion=f56e004b781719d8fdf6c9619b15caf2579bc1f2

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 <2920af33d097ca335e492b346af70b72986ad6dc; version=1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 <85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4; version=1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 <c5e68706527968282e49de205cc2b935823cb88a; version=19d5036e7ad766cf212aebec23b9f1d7924a62bc; version=502f08831a9afb72dc98a56ae6504da43e93b250; version=5.10.241 <5.11; version=5.15.190 <5.16; version=59c6d3d81d42bf543c90597b4f38c53d6874c5a1; version=6.1.148 <6.2; version=6.12.42 <6.12.111; version=6.15.10 <6.16; version=6.16.1 <6.17; version=6.17; version=6.6.102 <6.7; version=a426e8a6ae161f51888585b065db0f8f93ab2e16; version=d2c60a8a387e9fcc28447ef36c03f8e49fd052a6 <102e3dc5ab5ba052e294819e83384166b242c1ec; version=d42bbd8f30ac38b1ce54715bf08ec3dac18d6b25; version=f56e004b781719d8fdf6c9619b15caf2579bc1f2

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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