CVE-2024-43875: PCI: endpoint: Clean up error handling in vpci_scan_bus()

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-08-21 · updated 2026-06-17
Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: Clean up error handling in vpci_scan_bus() Smatch complains about inconsistent NULL checking in vpci_scan_bus(): drivers/pci/endpoint/functions/pci-epf-vntb.c:1024 vpci_scan_bus() error: we previously assumed 'vpci_bus' could be null (see line 1021) Instead of printing an error message and then crashing we should return an error code and clean up. Also the NULL check is reversed so it prints an error for success instead of failure.

Affected products

Linux kernel: from 5.15.153 before 5.15.165; from 6.0 before 6.1.103; from 6.2 before 6.6.44; from 6.7 before 6.10.3 — fixed in 5.15.165, 6.1.103, 6.10.3, 6.6.44

How to fix

Upgrade to a fixed version: Linux kernel 5.15.165, 6.1.103, 6.10.3, 6.6.44. Check the vendor advisory for mitigations.

References

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