CVE-2023-53175

Summary

In the Linux kernel, the following vulnerability has been resolved:

PCI: hv: Fix a crash in hv_pci_restore_msi_msg() during hibernation

When a Linux VM with an assigned PCI device runs on Hyper-V, if the PCI device driver is not loaded yet (i.e. MSI-X/MSI is not enabled on the device yet), doing a VM hibernation triggers a panic in hv_pci_restore_msi_msg() -> msi_lock_descs(&pdev->dev), because pdev->dev.msi.data is still NULL.

Avoid the panic by checking if MSI-X/MSI is enabled.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxdc2b453290c471266a2d56d7ead981e3c5cea05e < 223fc5352054900f70b8b5e10cfc2f297e70c512affected
LinuxLinuxdc2b453290c471266a2d56d7ead981e3c5cea05e < d0687755407b21d252b98dca6be459153a60c62aaffected
LinuxLinuxdc2b453290c471266a2d56d7ead981e3c5cea05e < e32fc2168aa6b477290392ddbb73d95f012b050caffected
LinuxLinuxdc2b453290c471266a2d56d7ead981e3c5cea05e < 04bbe863241a9be7d57fb4cf217ee4a72f480e70affected
LinuxLinux5.17affected
LinuxLinux0 < 5.17unaffected
LinuxLinux6.1.53 <= 6.1.*unaffected
LinuxLinux6.4.16 <= 6.4.*unaffected
LinuxLinux6.5.3 <= 6.5.*unaffected
LinuxLinux6.6 <= *unaffected

Weaknesses

References