CVE-2024-46750

In the Linux kernel, the following vulnerability has been resolved: PCI: Add missing bridge lock to pcibuslock One of the true positives that the cfgaccesslock lockdep effort identified is this sequence: WARNING: CPU: 14 PID: 1 at drivers/pci/pci.c:4886 pcibridgesecondarybusreset+0x5d/0x70 RIP:...

CVE-2024-46750 PCI: Add missing bridge lock to pci_bus_lock()

In the Linux kernel, the following vulnerability has been resolved: PCI: Add missing bridge lock to pcibuslock One of the true positives that the cfgaccesslock lockdep effort identified is this sequence: WARNING: CPU: 14 PID: 1 at drivers/pci/pci.c:4886 pcibridgesecondarybusreset+0x5d/0x70 RIP:...

CVE-2024-46750

CVE-2024-46750 affects the Linux kernel PCI subsystem. The issue is caused by a missing bridge lock in the PCI bus reset path, allowing unlocked secondary bus resets via pci_reset_bus(), while pci_bus_lock() already locks other parts. The fix adds pci_dev_lock() for the upstream bridge (and for @...