Linux Kernel Vulnerability in BCMA Wireless Driver

CVE-2026-98052

What is CVE-2026-98052?

A vulnerability in the BCMA wireless driver of the Linux kernel can lead to premature buffer consumption during data transmission. The issue arises when the 'last' field of the transmission control block is not cleared properly for non-final data fragments. This oversight permits the reuse of descriptor slots that contain stale values, potentially freeing memory associated with ongoing SKB fragments. To mitigate this risk, the implementation should ensure 'last' is consistently reset to a known state before being conditionally set, thus maintaining data integrity and preventing premature data loss.

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