CVE-2025-37819 - "Linux Kernel GICv2m Use After Free Vulnerability in irqchip"

CVE-2025-37819 - "Linux Kernel GICv2m Use After Free Vulnerability in irqchip"

https://cvefeed.io/rssfeed/latest.atom / Thu, 05/08/2025 - 11:39
CVE ID : CVE-2025-37819
Published : May 8, 2025, 7:15 a.m. | 57 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode() With ACPI in place, gicv2m_get_fwnode() is registered with the pci subsystem as pci_msi_get_fwnode_cb(), which may get invoked at runtime during a PCI host bridge probe. But, the call back is wrongly marked as __init, causing it to be freed, while being registered with the PCI subsystem and could trigger: Unable to handle kernel paging request at virtual address ffff8000816c0400 gicv2m_get_fwnode+0x0/0x58 (P) pci_set_bus_msi_domain+0x74/0x88 pci_register_host_bridge+0x194/0x548 This is easily reproducible on a Juno board with ACPI boot. Retain the function for later use.
Severity: 0.0 | NA
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