VYPR
Unrated severityNVD Advisory· Published Sep 18, 2024· Updated Jan 5, 2026

pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv

CVE-2024-46761

Description

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

pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv

The hotplug driver for powerpc (pci/hotplug/pnv_php.c) causes a kernel crash when we try to hot-unplug/disable the PCIe switch/bridge from the PHB.

The crash occurs because although the MSI data structure has been released during disable/hot-unplug path and it has been assigned with NULL, still during unregistration the code was again trying to explicitly disable the MSI which causes the NULL pointer dereference and kernel crash.

The patch fixes the check during unregistration path to prevent invoking pci_disable_msi/msix() since its data structure is already freed.

Affected products

112

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

8

News mentions

0

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