kernel: smc91x: fix broken irq-context in PREEMPT_RT

A locking context bug was found in the Linux kernel's smc91x Ethernet driver on PREEMPTRT kernels. The smcspecialtrylock function disables IRQs but smcspecialunlock does not properly restore IRQs on PREEMPTRT. This mismatch causes RCU read unlock to fail in devqueuexmit, triggering a "workqueue...

UBUNTU-CVE-2026-43448

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: Fix race bug in nvmepollirqdisable In the following scenario, pdev can be disabled between 1 and 3 by 2. This sets pdev-msixenabled = 0. Then, pciirqvector will return MSI-X IRQ15 for 1 whereas return INTx IRQcqvector...

CVE-2026-23013

In the Linux kernel, the following vulnerability has been resolved: net: octeonepvf: fix freeirq devid mismatch in IRQ rollback octepvfrequestirqs requests MSI-X queue IRQs with devid set to ioqvector. If requestirq fails part-way, the rollback loop calls freeirq with devid set to 'oct', which do...

Linux Kernel Security Vulnerabilities

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from an mismatch between the freeirq devid. This vulnerability may lead to reusing resources after...