In the Linux kernel, the following vulnerability has been resolved: ipmi: Rework user message limit handling The limit on the number of user… (CVE-2025-40202)
A vulnerability in the Linux kernel's IPMI subsystem related to user message limit handling has been resolved. The issue involved improper counting of user messages and a use-after-free condition. The fix restructures the receive message allocation routine to improve reference counting and user message limit management, enhancing safety and correctness.
AI Analysis
Technical Summary
CVE-2025-40202 addresses a vulnerability in the Linux kernel's IPMI (Intelligent Platform Management Interface) subsystem where the limit on the number of user messages was incorrectly handled. This included improper counting in some scenarios and a use-after-free vulnerability. The resolution involved restructuring the receive message allocation routine to centralize reference counting and user message limit enforcement, resulting in a cleaner and safer implementation.
Potential Impact
The vulnerability could lead to serious consequences including confidentiality, integrity, and availability impacts as indicated by the CVSS vector (C:H/I:H/A:H). Exploitation could allow an attacker with local access and low privileges to cause use-after-free conditions, potentially leading to privilege escalation, system crashes, or arbitrary code execution within the kernel context.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this vulnerability by reworking the user message limit handling and receive message allocation routine. Users should apply the official kernel updates that include this fix. Since this is a kernel-level vulnerability, updating to the patched kernel version is the recommended mitigation.
In the Linux kernel, the following vulnerability has been resolved: ipmi: Rework user message limit handling The limit on the number of user… (CVE-2025-40202)
Description
A vulnerability in the Linux kernel's IPMI subsystem related to user message limit handling has been resolved. The issue involved improper counting of user messages and a use-after-free condition. The fix restructures the receive message allocation routine to improve reference counting and user message limit management, enhancing safety and correctness.
CVSS v3.1
Score 7.8high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-40202 addresses a vulnerability in the Linux kernel's IPMI (Intelligent Platform Management Interface) subsystem where the limit on the number of user messages was incorrectly handled. This included improper counting in some scenarios and a use-after-free vulnerability. The resolution involved restructuring the receive message allocation routine to centralize reference counting and user message limit enforcement, resulting in a cleaner and safer implementation.
Potential Impact
The vulnerability could lead to serious consequences including confidentiality, integrity, and availability impacts as indicated by the CVSS vector (C:H/I:H/A:H). Exploitation could allow an attacker with local access and low privileges to cause use-after-free conditions, potentially leading to privilege escalation, system crashes, or arbitrary code execution within the kernel context.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this vulnerability by reworking the user message limit handling and receive message allocation routine. Users should apply the official kernel updates that include this fix. Since this is a kernel-level vulnerability, updating to the patched kernel version is the recommended mitigation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-cc93-7wpm-wqh7
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-40202"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6b72d59c2644c7f847a295
Added to database: 07/30/2026, 15:50:45 UTC
Last enriched: 07/30/2026, 16:56:02 UTC
Last updated: 09/10/2026, 19:38:46 UTC
Views: 9
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