CVE-2025-37819

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()<br /> <br /> With ACPI in place, gicv2m_get_fwnode() is registered with the pci<br /> subsystem as pci_msi_get_fwnode_cb(), which may get invoked at runtime<br /> during a PCI host bridge probe. But, the call back is wrongly marked as<br /> __init, causing it to be freed, while being registered with the PCI<br /> subsystem and could trigger:<br /> <br /> Unable to handle kernel paging request at virtual address ffff8000816c0400<br /> gicv2m_get_fwnode+0x0/0x58 (P)<br /> pci_set_bus_msi_domain+0x74/0x88<br /> pci_register_host_bridge+0x194/0x548<br /> <br /> This is easily reproducible on a Juno board with ACPI boot.<br /> <br /> Retain the function for later use.