CVE-2024-46750
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2024
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
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 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/20240711193650.701834-1-kbusch@meta.com]
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 090a3c5322e900f468b3205b76d0837003ad57b2 | affected | git | 0790b89c7e911003b8c50ae50e3ac7645de1fae9 | Unavailable | None listed |
| 090a3c5322e900f468b3205b76d0837003ad57b2 | affected | git | df77a678c33871a6e4ac5b54a71662f1d702335b | Unavailable | None listed |
| 090a3c5322e900f468b3205b76d0837003ad57b2 | affected | git | e2355d513b89a2cb511b4ded0deb426cdb01acd0 | Unavailable | None listed |
| 090a3c5322e900f468b3205b76d0837003ad57b2 | affected | git | 04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945 | Unavailable | None listed |
| 090a3c5322e900f468b3205b76d0837003ad57b2 | affected | git | 7253b4fed46471cc247c6cacefac890a8472c083 | Unavailable | None listed |
| 090a3c5322e900f468b3205b76d0837003ad57b2 | affected | git | 78c6e39fef5c428960aff742149bba302dd46f5a | Unavailable | None listed |
| 090a3c5322e900f468b3205b76d0837003ad57b2 | affected | git | 81c68e218ab883dfa368460a59b674084c0240da | Unavailable | None listed |
| 090a3c5322e900f468b3205b76d0837003ad57b2 | affected | git | a4e772898f8bf2e7e1cf661a12c60a5612c4afab | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.12 | Unavailable | None listed |
| 4.19.322 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.284 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.226 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.167 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.110 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.51 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.10.10 | unaffected | semver | Unavailable | 6.10.* | None listed |
| 6.11 | unaffected | original_commit_for_fix | Unavailable | * | None listed |