UnratedFix available
pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.19.322, 5.10.226, 5.15.167, 5.4.284, 6.1.110, 6.10.10, 6.6.51
- CVEs
- CVE-2024-46761
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 16:19 UTC · Revision 1
Source evidence
pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv
core-osv · Original sourcePublished 18 Sept 2024, 07:12 UTC
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.
osv:CVE-2024-46761
Kernel
Fixed versions: 4.19.322, 5.4.284, 5.10.226, 5.15.167, 6.1.110, 6.6.51, 6.10.10
Complete source record
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"modified": "2026-10-28T02:30:20.861916230Z",
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