CVE-2025-37889 - XEN PCI MSI NULL Pointer Dereference Vulnerability

CVE-2025-37889 - XEN PCI MSI NULL Pointer Dereference Vulnerability

https://cvefeed.io/rssfeed/latest.atom / Fri, 05/09/2025 - 11:39
CVE ID : CVE-2025-37889
Published : May 9, 2025, 7:16 a.m. | 1 hour, 25 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: PCI/MSI: Handle the NOMASK flag correctly for all PCI/MSI backends The conversion of the XEN specific global variable pci_msi_ignore_mask to a MSI domain flag, missed the facts that: 1) Legacy architectures do not provide a interrupt domain 2) Parent MSI domains do not necessarily have a domain info attached Both cases result in an unconditional NULL pointer dereference. This was unfortunatly missed in review and testing revealed it late. Cure this by using the existing pci_msi_domain_supports() helper, which handles all possible cases correctly.
Severity: 0.0 | NA
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