DEBIAN-CVE-2026-80975

In the Linux kernel, the following vulnerability has been resolved: mfd: qnap-mcu: keep the reply buffer alive past a command timeout qnapmcuexec publishes an on-stack buffer to the receive path: unsigned char rxQNAPMCURXBUFFERSIZE; ... reply-data = rx; reply-length = length; and qnapmcureceivebu...

CVE-2026-80975

In the Linux kernel, the following vulnerability has been resolved: mfd: qnap-mcu: keep the reply buffer alive past a command timeout qnapmcuexec publishes an on-stack buffer to the receive path: unsigned char rxQNAPMCURXBUFFERSIZE; ... reply-data = rx; reply-length = length; and qnapmcureceivebu...

CVE-2026-80975

In the Linux kernel, the following vulnerability has been resolved: mfd: qnap-mcu: keep the reply buffer alive past a command timeout qnapmcuexec publishes an on-stack buffer to the receive path: unsigned char rxQNAPMCURXBUFFERSIZE; ... reply-data = rx; reply-length = length; and qnapmcureceivebu...

CVE-2026-80975

CVE-2026-80975 is a use-after-free vulnerability in the Linux kernel's qnap-mcu MFD driver. When a command times out or a write fails, qnap_mcu_exec() returns while reply->data still points to its own stack frame. A late MCU reply or unsolicited message written by the serdev receive path then ...