In the Linux kernel, the following vulnerability has been resolved: eth: fbnic: Handle maximum standalone channels Standalone channels use one NAPI… (CVE-2026-98618)

The Linux kernel fbnic driver uses one NAPI vector per Tx and Rx queue in standalone channel mode. However, the allocation path did not account for the maximum number of Tx queues (FBNIC_MAX_TXQS), leading to a mismatch where a 64-Tx/64-Rx setup recorded 128 vectors but allocated only 64. This discrepancy caused NULL entries that were dereferenced during resource setup. The fix includes adjusting the allocation to incorporate the maximum vector count, preventing NULL dereferences.

This vulnerability could lead to NULL pointer dereferences in the fbnic driver during resource setup when using maximum standalone channel configurations, potentially causing kernel crashes or instability. No known exploits are reported in the wild.

A fix has been implemented in the Linux kernel to correctly handle the maximum vector count in standalone channel allocations for the fbnic driver. Users should update to the patched kernel version once available. Patch status is not explicitly confirmed in the provided data; check the vendor advisory for current remediation guidance.