CVE-2025-37819
irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()
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irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()
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.
Reserved 2025-04-16 | Published 2025-05-08 | Updated 2025-05-09 | Assigner Linuxgit.kernel.org/...c/f95659affee301464f0d058d528d96b35b452da8
git.kernel.org/...c/dc0d654eb4179b06d3206e4396d072108b9ba082
git.kernel.org/...c/2f2803e4b5e4df2b08d378deaab78b1681ef9b30
git.kernel.org/...c/3939d6f29d34cdb60e3f68b76e39e00a964a1d51
git.kernel.org/...c/47bee0081b483b077c7560bc5358ad101f89c8ef
git.kernel.org/...c/3318dc299b072a0511d6dfd8367f3304fb6d9827
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