Memory Management Vulnerability in Linux Kernel Affecting scsi: lpfc by Red Hat
CVE-2025-39841

Currently unrated

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 19 September 2025

What is CVE-2025-39841?

This vulnerability in the Linux kernel's SCSI subsystem specifically affects the 'lpfc' driver by introducing a use-after-free condition. The issue stems from an incorrect sequence in which buffers are released and cleared in the deferred receive path. In the original implementation, the receive queue (RQ) buffer was freed before the associated context pointer was cleared, allowing for a potential double-free or use-after-free scenario. This could lead to exploitations in concurrent paths that interact with the same pointer. To mitigate this vulnerability, the order of operations has been corrected to ensure that the pointer is detached under a lock before freeing it, aligning it with the correct practices already utilized in related paths.

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