CVE-2026-23059

About vulnerability

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Sanitize payload size to prevent member overflow In qla27xx_copy_fpin_pkt() and qla27xx_copy_multiple_pkt(), the frame_size reported by firmware is used to calculate the copy length into item->iocb. However, the iocb member is defined as a fixed-size 64-byte array within struct purex_item. If the reported frame_size exceeds 64 bytes, subsequent memcpy calls will overflow the iocb member boundary. While extra memory might be allocated, this cross-member write is unsafe and triggers warnings under CONFIG_FORTIFY_SOURCE. Fix this by capping total_bytes to the size of the iocb member (64 bytes) before allocation and copying. This ensures all copies remain within the bounds of the destination structure member. A buffer overflow vulnerability was found in the Linux kernel’s QLogic qla2xxx Fibre Channel driver. The qla27xx_copy_fpin_pkt() and qla27xx_copy_multiple_pkt() functions use firmware-reported frame_size to calculate copy length into item->iocb, a fixed 64-byte array. When frame_size exceeds 64 bytes, the memcpy operations overflow the iocb member boundary, writing into adjacent structure members.

Live-patch status from KernelCare for each operating system.