CVE-2025-38624
published 2025-08-22CVE-2025-38624: 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…
medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
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]
Affected
36 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.148-1 (bookworm) | linux 6.1.148-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.148-1 (bookworm) | linux 6.1.148-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 360aebd85a4c946764f6301d68de2a817fad5159 < 8c1ad4af160691e157d688ad9619ced2df556aac | 8c1ad4af160691e157d688ad9619ced2df556aac |
| linux | linux | >= 360aebd85a4c946764f6301d68de2a817fad5159 < 912e200240b6f9758f0b126e64a61c9227f4ad37 | 912e200240b6f9758f0b126e64a61c9227f4ad37 |
| linux | linux | >= 360aebd85a4c946764f6301d68de2a817fad5159 < 398170b7fd0e0db2f8096df5206c75e5ff41415a | 398170b7fd0e0db2f8096df5206c75e5ff41415a |
| linux | linux | >= 360aebd85a4c946764f6301d68de2a817fad5159 < 32173edf3fe2d447e14e5e3b299387c6f9602a88 | 32173edf3fe2d447e14e5e3b299387c6f9602a88 |
| linux | linux | >= 360aebd85a4c946764f6301d68de2a817fad5159 < 28aa3cfce12487614219e7667ec84424e1f43227 | 28aa3cfce12487614219e7667ec84424e1f43227 |
| linux | linux | >= 360aebd85a4c946764f6301d68de2a817fad5159 < 1773c19fa55e944cdd2634e2d9e552f87f2d38d5 | 1773c19fa55e944cdd2634e2d9e552f87f2d38d5 |
| linux | linux | >= 360aebd85a4c946764f6301d68de2a817fad5159 < bbd302c4b79df10197ffa7270ca3aa572eeca33c | bbd302c4b79df10197ffa7270ca3aa572eeca33c |
| linux | linux | >= 360aebd85a4c946764f6301d68de2a817fad5159 < 4668619092554e1b95c9a5ac2941ca47ba6d548a | 4668619092554e1b95c9a5ac2941ca47ba6d548a |
| linux | linux_kernel | >= 0 < 6.1.148-1 | 6.1.148-1 |
| linux | linux_kernel | >= 0 < 6.12.43-1 | 6.12.43-1 |
| linux | linux_kernel | >= 0 < 6.16.3-1 | 6.16.3-1 |
| linux | linux_kernel | >= 0 < 5.15.0-163.173 | 5.15.0-163.173 |
| linux | linux_kernel | >= 0 < 6.8.0-100.100 | 6.8.0-100.100 |
| linux | linux_kernel | >= 4.9 < 5.10.241 | 5.10.241 |
| linux | linux_kernel | >= 5.11 < 5.15.190 | 5.15.190 |
| linux | linux_kernel | >= 5.16 < 6.1.148 | 6.1.148 |
| linux | linux_kernel | >= 6.13 < 6.15.10 | 6.15.10 |
| linux | linux_kernel | >= 6.16 < 6.16.1 | 6.16.1 |
| linux | linux_kernel | >= 6.2 < 6.6.102 | 6.6.102 |
| linux | linux_kernel | >= 6.7 < 6.12.42 | 6.12.42 |
| msrc | azl3_kernel_6.6.96.2-1_on_azure_linux_3.0 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM