CVE-2025-38623
Vulnerability Scoring
Analysis In Progress
CVE-2025-38623 Vulnerability Analysis & Exploit Details
CVE-2025-38623
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2025-38623 Details
Status: Awaiting Analysis
Last updated: 🕒 28 Aug 2025, 15:15 UTC
Originally published on: 🕓 22 Aug 2025, 16:15 UTC
Time between publication and last update: 5 days
CVSS Release:
CVE-2025-38623 Vulnerability Summary
CVE-2025-38623: In the Linux kernel, the following vulnerability has been resolved: PCI: pnv_php: Fix surprise plug detection and recovery The existing PowerNV hotplug code did not handle surprise plug events correctly, leading to a complete failure of the hotplug system after device removal and a required reboot to detect new devices. This comes down to two issues: 1) When a device is surprise removed, often the bridge upstream port will cause a PE freeze on the PHB. If this freeze is not cleared, the MSI interrupts from the bridge hotplug notification logic will not be received by the kernel, stalling all plug events on all slots associated with the PE. 2) When a device is removed from a slot, regardless of surprise or programmatic removal, the associated PHB/PE ls left frozen. If this freeze is not cleared via a fundamental reset, skiboot is unable to clear the freeze and cannot retrain / rescan the slot. This also requires a reboot to clear the freeze and redetect the device in the slot. Issue the appropriate unfreeze and rescan commands on hotplug events, and don't oops on hotplug if pci_bus_to_OF_node() returns NULL. [bhelgaas: tidy comments]
Assessing the Risk of CVE-2025-38623
Access Complexity Graph
The exploitability of CVE-2025-38623 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2025-38623
No exploitability data is available for CVE-2025-38623.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2025-38623, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2025-38623, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2025-38623 does not compromise confidentiality.
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Integrity:
None
CVE-2025-38623 does not impact data integrity.
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Availability:
None
CVE-2025-38623 does not affect system availability.
CVE-2025-38623 References
External References
- https://git.kernel.org/stable/c/1d2f63680c5719a5da92639e981c6c9a87fcee08
- https://git.kernel.org/stable/c/2ec8ec57bb8ebde3e2a015eff80e5d66e6634fe3
- https://git.kernel.org/stable/c/473999ba937eac9776be791deed7c84a21d7880b
- https://git.kernel.org/stable/c/48c6935a34981bb56f35be0774ec1f30c6e386f8
- https://git.kernel.org/stable/c/6e7b24c71e530a6c1d656e73d8a30ee081656844
- https://git.kernel.org/stable/c/6e7b5f922901585b8f11e0d6cda12bda5c59fc8a
- https://git.kernel.org/stable/c/78d20b8c13075eae3d884c21db7a09a6bbdda5b2
- https://git.kernel.org/stable/c/a2a2a6fc2469524caa713036297c542746d148dc
CWE Common Weakness Enumeration
Unknown
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