CVE-2026-23059

Summary

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.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/408bfa8d70f79ac696cec1bdbdfb3bf43a02e6d0
• https://git.kernel.org/stable/c/1922468a4a80424e5a69f7ba50adcee37f4722e9
• https://git.kernel.org/stable/c/aa14451fa5d5f2de919384c637e2a8c604e1a1fe
• https://git.kernel.org/stable/c/19bc5f2a6962dfaa0e32d0e0bc2271993d85d414

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