cbcvebase.
CVE-2024-46750
published 2024-09-18

CVE-2024-46750: In the Linux kernel, the following vulnerability has been resolved: PCI: Add missing bridge lock to pci_bus_lock() One of the true positives that the…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
13.1th percentile
In the Linux kernel, the following vulnerability has been resolved: PCI: Add missing bridge lock to pci_bus_lock() One of the true positives that the cfg_access_lock lockdep effort identified is this sequence: WARNING: CPU: 14 PID: 1 at drivers/pci/pci.c:4886 pci_bridge_secondary_bus_reset+0x5d/0x70 RIP: 0010:pci_bridge_secondary_bus_reset+0x5d/0x70 Call Trace: ? __warn+0x8c/0x190 ? pci_bridge_secondary_bus_reset+0x5d/0x70 ? report_bug+0x1f8/0x200 ? handle_bug+0x3c/0x70 ? exc_invalid_op+0x18/0x70 ? asm_exc_invalid_op+0x1a/0x20 ? pci_bridge_secondary_bus_reset+0x5d/0x70 pci_reset_bus+0x1d8/0x270 vmd_probe+0x778/0xa10 pci_device_probe+0x95/0x120 Where pci_reset_bus() users are triggering unlocked secondary bus resets. Ironically pci_bus_reset(), several calls down from pci_reset_bus(), uses pci_bus_lock() before issuing the reset which locks everything *but* the bridge itself. For the same motivation as adding: bridge = pci_upstream_bridge(dev); if (bridge) pci_dev_lock(bridge); to pci_reset_function() for the "bus" and "cxl_bus" reset cases, add pci_dev_lock() for @bus->self to pci_bus_lock(). [bhelgaas: squash in recursive locking deadlock fix from Keith Busch: https://lore.kernel.org/r/[email protected]]

Affected

33 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.112-1 (bookworm)linux 6.1.112-1 (bookworm)
debianlinux-6.1< linux 6.1.112-1 (bookworm)linux 6.1.112-1 (bookworm)
linuxlinux
linuxlinux>= 090a3c5322e900f468b3205b76d0837003ad57b2 < 0790b89c7e911003b8c50ae50e3ac7645de1fae90790b89c7e911003b8c50ae50e3ac7645de1fae9
linuxlinux>= 090a3c5322e900f468b3205b76d0837003ad57b2 < df77a678c33871a6e4ac5b54a71662f1d702335bdf77a678c33871a6e4ac5b54a71662f1d702335b
linuxlinux>= 090a3c5322e900f468b3205b76d0837003ad57b2 < e2355d513b89a2cb511b4ded0deb426cdb01acd0e2355d513b89a2cb511b4ded0deb426cdb01acd0
linuxlinux>= 090a3c5322e900f468b3205b76d0837003ad57b2 < 04e85a3285b0e5c5af6fd2c0fd6e95ffecc0194504e85a3285b0e5c5af6fd2c0fd6e95ffecc01945
linuxlinux>= 090a3c5322e900f468b3205b76d0837003ad57b2 < 7253b4fed46471cc247c6cacefac890a8472c0837253b4fed46471cc247c6cacefac890a8472c083
linuxlinux>= 090a3c5322e900f468b3205b76d0837003ad57b2 < 78c6e39fef5c428960aff742149bba302dd46f5a78c6e39fef5c428960aff742149bba302dd46f5a
linuxlinux>= 090a3c5322e900f468b3205b76d0837003ad57b2 < 81c68e218ab883dfa368460a59b674084c0240da81c68e218ab883dfa368460a59b674084c0240da
linuxlinux>= 090a3c5322e900f468b3205b76d0837003ad57b2 < a4e772898f8bf2e7e1cf661a12c60a5612c4afaba4e772898f8bf2e7e1cf661a12c60a5612c4afab
linuxlinux_kernel< 4.19.3224.19.322
linuxlinux_kernel>= 0 < 5.10.226-15.10.226-1
linuxlinux_kernel>= 0 < 6.1.112-16.1.112-1
linuxlinux_kernel>= 0 < 6.10.11-16.10.11-1
linuxlinux_kernel>= 0 < 6.10.11-16.10.11-1
linuxlinux_kernel>= 0 < 5.4.0-200.2205.4.0-200.220
linuxlinux_kernel>= 0 < 5.15.0-125.1355.15.0-125.135
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 4.20 < 5.4.2845.4.284
linuxlinux_kernel>= 5.11 < 5.15.1675.15.167
linuxlinux_kernel>= 5.16 < 6.1.1106.1.110
linuxlinux_kernel>= 5.5 < 5.10.2265.10.226
linuxlinux_kernel>= 6.2 < 6.6.516.6.51
linuxlinux_kernel>= 6.7 < 6.10.106.10.10

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_oracle6.1MEDIUM
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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