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Vulnerability DatabaseCVE-2025-38526
CVE-2025-38526:
Linux Kernel vulnerability analysis and mitigation
Overview
A vulnerability has been identified in the Linux kernel (CVE-2025-38526) that was discovered on August 16, 2025. The issue involves a NULL pointer dereference in the icelagisswitchdevrunning() function when it is called from outside of the LAG event handler code. This results in lag->upper_netdev being NULL in certain scenarios (NVD).
Technical details
The vulnerability occurs in the Linux kernel's networking stack, specifically in the ice driver's LAG (Link Aggregation) functionality. The icelagisswitchdevrunning() function can be called from contexts outside the LAG event handler, which can lead to a NULL pointer dereference when accessing lag->upper_netdev without proper validation (NVD).
Impact
If exploited, this vulnerability could lead to a system crash due to the NULL pointer dereference, potentially causing a denial of service condition in affected systems (NVD).
Mitigation and workarounds
A fix has been implemented that adds a NULL check before dereferencing lag->uppernetdev in the icelagisswitchdev_running() function. The patch has been committed to the kernel repository and is available for implementation (NVD).
Additional resources
Source: This report was generated using AI
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