Answer in brief
CVE-2024-46750 records a Unknown severity vulnerability in PCI: Add missing bridge lock to pci_bus_lock(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2024-46750 records a Unknown severity vulnerability in PCI: Add missing bridge lock to pci_bus_lock(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=090a3c5322e900f468b3205b76d0837003ad57b2 <0790b89c7e911003b8c50ae50e3ac7645de1fae9 || >=090a3c5322e900f468b3205b76d0837003ad57b2 <df77a678c33871a6e4ac5b54a71662f1d702335b || >=090a3c5322e900f468b3205b76d0837003ad57b2 <e2355d513b89a2cb511b4ded0deb426cdb01acd0 || >=090a3c5322e900f468b3205b76d0837003ad57b2 <04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945 || >=090a3c5322e900f468b3205b76d0837003ad57b2 <7253b4fed46471cc247c6cacefac890a8472c083 || >=090a3c5322e900f468b3205b76d0837003ad57b2 <78c6e39fef5c428960aff742149bba302dd46f5a || >=090a3c5322e900f468b3205b76d0837003ad57b2 <81c68e218ab883dfa368460a59b674084c0240da || >=090a3c5322e900f468b3205b76d0837003ad57b2 <a4e772898f8bf2e7e1cf661a12c60a5612c4afab | 0790b89c7e911003b8c50ae50e3ac7645de1fae9, df77a678c33871a6e4ac5b54a71662f1d702335b, e2355d513b89a2cb511b4ded0deb426cdb01acd0, 04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945, 7253b4fed46471cc247c6cacefac890a8472c083, 78c6e39fef5c428960aff742149bba302dd46f5a, 81c68e218ab883dfa368460a59b674084c0240da, a4e772898f8bf2e7e1cf661a12c60a5612c4afab |
| Linux/Linuxgeneric | 3.12 | Not reported |
| Siemens/RUGGEDCOM RST2428Pgeneric | >=0 <V3.2 | V3.2 |
| Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric | >=0 <V3.2 | V3.2 |
| Siemens/SCALANCE XCM-/XRM-/XCH-/XRH-300 familygeneric | >=0 <V3.2 | V3.2 |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
Published upstream
Sep 18, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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: <TASK> ? __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]]
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=090a3c5322e900f468b3205b76d0837003ad57b2 <0790b89c7e911003b8c50ae50e3ac7645de1fae9 || >=090a3c5322e900f468b3205b76d0837003ad57b2 <df77a678c33871a6e4ac5b54a71662f1d702335b || >=090a3c5322e900f468b3205b76d0837003ad57b2 <e2355d513b89a2cb511b4ded0deb426cdb01acd0 || >=090a3c5322e900f468b3205b76d0837003ad57b2 <04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945 || >=090a3c5322e900f468b3205b76d0837003ad57b2 <7253b4fed46471cc247c6cacefac890a8472c083 || >=090a3c5322e900f468b3205b76d0837003ad57b2 <78c6e39fef5c428960aff742149bba302dd46f5a || >=090a3c5322e900f468b3205b76d0837003ad57b2 <81c68e218ab883dfa368460a59b674084c0240da || >=090a3c5322e900f468b3205b76d0837003ad57b2 <a4e772898f8bf2e7e1cf661a12c60a5612c4afab | 0790b89c7e911003b8c50ae50e3ac7645de1fae9, df77a678c33871a6e4ac5b54a71662f1d702335b, e2355d513b89a2cb511b4ded0deb426cdb01acd0, 04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945, 7253b4fed46471cc247c6cacefac890a8472c083, 78c6e39fef5c428960aff742149bba302dd46f5a, 81c68e218ab883dfa368460a59b674084c0240da, a4e772898f8bf2e7e1cf661a12c60a5612c4afab |
| Linux/Linuxgeneric | 3.12 | Not reported |
| Siemens/RUGGEDCOM RST2428Pgeneric | >=0 <V3.2 | V3.2 |
| Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric | >=0 <V3.2 | V3.2 |
| Siemens/SCALANCE XCM-/XRM-/XCH-/XRH-300 familygeneric | >=0 <V3.2 | V3.2 |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
Published upstream
Sep 18, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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: <TASK> ? __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]]
Quoted source text, attributed separately from HOL analysis.