CVE-2026-43097

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the PCI Hyper-V driver where a double free of a domain number occurs during the error path of the hv pci probe() function. If the function fails after storing the domain number in hbus->bridge->domain nr, the domain number is freed via pci bus release emul domain nr(). Subsequently, the bridge release callback pci release host bridge dev() attempts to free the same domain number again, leading to a double call of the ida free() function.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.