CVE-2025-38624None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: PCI: pnv_php: Clean up allocated IRQs on unplug When the root of a nested PCIe bridge configuration is unplugged, the pnv_php driver leaked the allocated IRQ resources…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
PCI: pnv_php: Clean up allocated IRQs on unplug
When the root of a nested PCIe bridge configuration is unplugged, the pnv_php driver leaked the allocated IRQ resources for the child bridges' hotplug event notifications, resulting in a panic.
Fix this by walking all child buses and deallocating all its IRQ resources before calling pci_hp_remove_devices().
Also modify the lifetime of the workqueue at struct pnv_php_slot::wq so that it is only destroyed in pnv_php_free_slot(), instead of pnv_php_disable_irq(). This is required since pnv_php_disable_irq() will now be called by workers triggered by hot unplug interrupts, so the workqueue needs to stay allocated.
The abridged kernel panic that occurs without this patch is as follows:
WARNING: CPU: 0 PID: 687 at kernel/irq/msi.c:292 msi_device_data_release+0x6c/0x9c CPU: 0 UID: 0 PID: 687 Comm: bash Not tainted 6.14.0-rc5+ #2 Call Trace: msi_device_data_release+0x34/0x9c (unreliable) release_nodes+0x64/0x13c devres_release_all+0xc0/0x140 device_del+0x2d4/0x46c pci_destroy_dev+0x5c/0x194 pci_hp_remove_devices+0x90/0x128 pci_hp_remove_devices+0x44/0x128 pnv_php_disable_slot+0x54/0xd4 power_write_file+0xf8/0x18c pci_slot_attr_store+0x40/0x5c sysfs_kf_write+0x64/0x78 kernfs_fop_write_iter+0x1b0/0x290 vfs_write+0x3bc/0x50c ksys_write+0x84/0x140 system_call_exception+0x124/0x230 system_call_vectored_common+0x15c/0x2ec
[bhelgaas: tidy comments]
Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 8c1ad4af160691e157d688ad9619ced2df556aacLinux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 912e200240b6f9758f0b126e64a61c9227f4ad37Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 398170b7fd0e0db2f8096df5206c75e5ff41415aLinux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 32173edf3fe2d447e14e5e3b299387c6f9602a88Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 28aa3cfce12487614219e7667ec84424e1f43227Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 1773c19fa55e944cdd2634e2d9e552f87f2d38d5Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < bbd302c4b79df10197ffa7270ca3aa572eeca33cLinux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 4668619092554e1b95c9a5ac2941ca47ba6d548aLinux 4.9Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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