CVE-2026-90193

A flaw was found in the Linux kernel's qcom-cpucp mailbox driver. Under specific PREEMPTRT configurations, the qcomcpucpmboxirqfn interrupt handler attempts to re-acquire a spinlock it already holds. This re-entrant lock attempt causes a permanent deadlock within the kernel. This can lead to a...

CVE-2026-90192

A flaw was found in the Linux kernel's qcom-cpucp mailbox driver. The qcomcpucpmboxsenddata function, responsible for sending data, did not properly handle a NULL data pointer when mailboxclearchannel attempted to notify the remote side that the receive RX channel was cleared. This blind...

SUSE CVE-2026-90192

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: handle NULL data in senddata callback mailboxclearchannel calls mboxsendmessage with NULL data to notify the remote side that the RX channel has been cleared. qcomcpucpmboxsenddata blindly dereferenced the da...

SUSE CVE-2026-90193

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: fix PREEMPTRT self-deadlock in IRQ handler qcomcpucpmboxirqfn calls mboxchanreceiveddata while holding chan-lock. Under PREEMPTRT, spinlockirqsave is converted to an rtspinlock rtmutex-based, which tracks...

Linux Distros Unpatched Vulnerability : CVE-2026-90192

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mailbox: qcom-cpucp: handle NULL data in senddata callback mailboxclearchannel calls mboxsendmessage with NULL data to notify the remote side that the RX channe...

Linux Distros Unpatched Vulnerability : CVE-2026-90193

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mailbox: qcom-cpucp: fix PREEMPTRT self-deadlock in IRQ handler qcomcpucpmboxirqfn calls mboxchanreceiveddata while holding chan-lock. Under PREEMPTRT,...

DEBIAN-CVE-2026-90193

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: fix PREEMPTRT self-deadlock in IRQ handler qcomcpucpmboxirqfn calls mboxchanreceiveddata while holding chan-lock. Under PREEMPTRT, spinlockirqsave is converted to an rtspinlock rtmutex-based, which tracks...

CVE-2026-90193

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: fix PREEMPTRT self-deadlock in IRQ handler qcomcpucpmboxirqfn calls mboxchanreceiveddata while holding chan-lock. Under PREEMPTRT, spinlockirqsave is converted to an rtspinlock rtmutex-based, which tracks...

DEBIAN-CVE-2026-90192

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: handle NULL data in senddata callback mailboxclearchannel calls mboxsendmessage with NULL data to notify the remote side that the RX channel has been cleared. qcomcpucpmboxsenddata blindly dereferenced the da...

CVE-2026-90192

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: handle NULL data in senddata callback mailboxclearchannel calls mboxsendmessage with NULL data to notify the remote side that the RX channel has been cleared. qcomcpucpmboxsenddata blindly dereferenced the da...

CVE-2026-90193 mailbox: qcom-cpucp: fix PREEMPT_RT self-deadlock in IRQ handler

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: fix PREEMPTRT self-deadlock in IRQ handler qcomcpucpmboxirqfn calls mboxchanreceiveddata while holding chan-lock. Under PREEMPTRT, spinlockirqsave is converted to an rtspinlock rtmutex-based, which tracks...

CVE-2026-90193 mailbox: qcom-cpucp: fix PREEMPT_RT self-deadlock in IRQ handler

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: fix PREEMPTRT self-deadlock in IRQ handler qcomcpucpmboxirqfn calls mboxchanreceiveddata while holding chan-lock. Under PREEMPTRT, spinlockirqsave is converted to an rtspinlock rtmutex-based, which tracks...

CVE-2026-90193

This CVE affects the qcom-cpucp mailbox driver in the Linux kernel under PREEMPT_RT configurations. The root cause is a lock re-entrancy deadlock : qcom_cpucp_mbox_irq_fn() invokes mbox_chan_received_data() while holding chan->lock. Under PREEMPT_RT, spin_lock_irqsave() is converted to an rt_s...

EUVD-2026-81786

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: fix PREEMPTRT self-deadlock in IRQ handler qcomcpucpmboxirqfn calls mboxchanreceiveddata while holding chan-lock. Under PREEMPTRT, spinlockirqsave is converted to an rtspinlock rtmutex-based, which tracks...

CVE-2026-90192 mailbox: qcom-cpucp: handle NULL data in send_data callback

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: handle NULL data in senddata callback mailboxclearchannel calls mboxsendmessage with NULL data to notify the remote side that the RX channel has been cleared. qcomcpucpmboxsenddata blindly dereferenced the da...

CVE-2026-90192

CVE-2026-90192 affects the Linux kernel 's Qualcomm qcom-cpucp mailbox driver. The root cause is a NULL pointer dereference in qcom_cpucp_mbox_send_data(), which blindly dereferenced the data pointer when mailbox_clear_channel() invoked mbox_send_message() with NULL data to signal an RX channel c...

CVE-2026-90192 mailbox: qcom-cpucp: handle NULL data in send_data callback

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: handle NULL data in senddata callback mailboxclearchannel calls mboxsendmessage with NULL data to notify the remote side that the RX channel has been cleared. qcomcpucpmboxsenddata blindly dereferenced the da...

EUVD-2026-81785

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: handle NULL data in senddata callback mailboxclearchannel calls mboxsendmessage with NULL data to notify the remote side that the RX channel has been cleared. qcomcpucpmboxsenddata blindly dereferenced the da...

CVE-2026-90193: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: fix PREEMPTRT self-deadlock in IRQ handler qcomcpucpmboxirqfn calls mboxchanreceiveddata while holding chan-lock. Under PREEMPTRT, spinlockirqsave is converted to an rtspinlock rtmutex-based, which tracks...

CVE-2026-90192: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: handle NULL data in senddata callback mailboxclearchannel calls mboxsendmessage with NULL data to notify the remote side that the RX channel has been cleared. qcomcpucpmboxsenddata blindly dereferenced the da...