{"id":"CVE-2025-38624","title":"PCI: pnv_php: Clean up allocated IRQs on unplug","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: pnv_php: Clean up allocated IRQs on unplug\n\nWhen the root of a nested PCIe bridge configuration is unplugged, the\npnv_php driver leaked the allocated IRQ resources…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 8c1ad4af160691e157d688ad9619ced2df556aac","Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 912e200240b6f9758f0b126e64a61c9227f4ad37","Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 398170b7fd0e0db2f8096df5206c75e5ff41415a","Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 32173edf3fe2d447e14e5e3b299387c6f9602a88","Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 28aa3cfce12487614219e7667ec84424e1f43227","Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 1773c19fa55e944cdd2634e2d9e552f87f2d38d5","Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < bbd302c4b79df10197ffa7270ca3aa572eeca33c","Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 4668619092554e1b95c9a5ac2941ca47ba6d548a","Linux 4.9"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T21:05:21.395368Z"},"published":"2025-08-22","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:12:49.500Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38624","references":[{"url":"https://git.kernel.org/stable/c/8c1ad4af160691e157d688ad9619ced2df556aac"},{"url":"https://git.kernel.org/stable/c/912e200240b6f9758f0b126e64a61c9227f4ad37"},{"url":"https://git.kernel.org/stable/c/398170b7fd0e0db2f8096df5206c75e5ff41415a"},{"url":"https://git.kernel.org/stable/c/32173edf3fe2d447e14e5e3b299387c6f9602a88"},{"url":"https://git.kernel.org/stable/c/28aa3cfce12487614219e7667ec84424e1f43227"},{"url":"https://git.kernel.org/stable/c/1773c19fa55e944cdd2634e2d9e552f87f2d38d5"},{"url":"https://git.kernel.org/stable/c/bbd302c4b79df10197ffa7270ca3aa572eeca33c"},{"url":"https://git.kernel.org/stable/c/4668619092554e1b95c9a5ac2941ca47ba6d548a"}],"tags":["cve.org"],"epss":0.0017,"epssPercentile":0.06406,"ingestedAt":"2026-11-05T22:38:32.000Z","slug":"CVE-2025-38624","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nPCI: pnv_php: Clean up allocated IRQs on unplug\n\nWhen the root of a nested PCIe bridge configuration is unplugged, the\npnv_php driver leaked the allocated IRQ resources for the child bridges'\nhotplug event notifications, resulting in a panic.\n\nFix this by walking all child buses and deallocating all its IRQ resources\nbefore calling pci_hp_remove_devices().\n\nAlso modify the lifetime of the workqueue at struct pnv_php_slot::wq so\nthat it is only destroyed in pnv_php_free_slot(), instead of\npnv_php_disable_irq(). This is required since pnv_php_disable_irq() will\nnow be called by workers triggered by hot unplug interrupts, so the\nworkqueue needs to stay allocated.\n\nThe abridged kernel panic that occurs without this patch is as follows:\n\n  WARNING: CPU: 0 PID: 687 at kernel/irq/msi.c:292 msi_device_data_release+0x6c/0x9c\n  CPU: 0 UID: 0 PID: 687 Comm: bash Not tainted 6.14.0-rc5+ #2\n  Call Trace:\n   msi_device_data_release+0x34/0x9c (unreliable)\n   release_nodes+0x64/0x13c\n   devres_release_all+0xc0/0x140\n   device_del+0x2d4/0x46c\n   pci_destroy_dev+0x5c/0x194\n   pci_hp_remove_devices+0x90/0x128\n   pci_hp_remove_devices+0x44/0x128\n   pnv_php_disable_slot+0x54/0xd4\n   power_write_file+0xf8/0x18c\n   pci_slot_attr_store+0x40/0x5c\n   sysfs_kf_write+0x64/0x78\n   kernfs_fop_write_iter+0x1b0/0x290\n   vfs_write+0x3bc/0x50c\n   ksys_write+0x84/0x140\n   system_call_exception+0x124/0x230\n   system_call_vectored_common+0x15c/0x2ec\n\n[bhelgaas: tidy comments]\n\n## Affected\n\n- `Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 8c1ad4af160691e157d688ad9619ced2df556aac`\n- `Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 912e200240b6f9758f0b126e64a61c9227f4ad37`\n- `Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 398170b7fd0e0db2f8096df5206c75e5ff41415a`\n- `Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 32173edf3fe2d447e14e5e3b299387c6f9602a88`\n- `Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 28aa3cfce12487614219e7667ec84424e1f43227`\n- `Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 1773c19fa55e944cdd2634e2d9e552f87f2d38d5`\n- `Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < bbd302c4b79df10197ffa7270ca3aa572eeca33c`\n- `Linux >= 360aebd85a4c946764f6301d68de2a817fad5159 < 4668619092554e1b95c9a5ac2941ca47ba6d548a`\n- `Linux 4.9`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}