What’s Vulnerable › Vulnerabilities

CVE-2023-53175: PCI: hv: Fix a crash in hv_pci_restore_msi_msg() during hibernation

• 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: 2025-09-15 · updated 2026-06-17

Description

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 products

• Linux kernel: from 5.17 before 6.1.53; from 6.2 before 6.4.16; from 6.5 before 6.5.3 — fixed in 6.1.53, 6.4.16, 6.5.3

How to fix

Upgrade to a fixed version: Linux kernel 6.1.53, 6.4.16, 6.5.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/04bbe863241a9be7d57fb4cf217ee4a72f480e70
• https://git.kernel.org/stable/c/223fc5352054900f70b8b5e10cfc2f297e70c512
• https://git.kernel.org/stable/c/d0687755407b21d252b98dca6be459153a60c62a
• https://git.kernel.org/stable/c/e32fc2168aa6b477290392ddbb73d95f012b050c

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