Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix NULL domain on device release In the kdump kernel, the IOMMU operates in deferred_attach mode. In this mode, info->domain may not yet be assigned by the time the release_device function is called. It leads to the following crash in the crash kernel: BUG: kernel NULL pointer dereference, address: 000000000000003c ... RIP: 0010:do_raw_spin_lock+0xa/0xa0 ... _raw_spin_lock_irqsave+0x1b/0x30 intel_iommu_release_device+0x96/0x170 iommu_deinit_device+0x39/0xf0 __iommu_group_remove_device+0xa0/0xd0 iommu_bus_notifier+0x55/0xb0 notifier_call_chain+0x5a/0xd0 blocking_notifier_call_chain+0x41/0x60 bus_notify+0x34/0x50 device_del+0x269/0x3d0 pci_remove_bus_device+0x77/0x100 p2sb_bar+0xae/0x1d0 ... i801_probe+0x423/0x740 Use the release_domain mechanism to fix it. The scalable mode context entry which is not part of release domain should be cleared in release_device().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 586081d3f6b13ec9dfdfdf3d7842a688b376fa5e before 333fe86968482ca701c609af590003bcea450e8f; affected 586081d3f6b13ec9dfdfdf3d7842a688b376fa5e before 81e921fd321614c2ad8ac333b041aae1da7a1c6d |
| Linux / Linux | affected 5.18; unaffected 0 before 5.18; unaffected 6.8.2 through 6.8.*; unaffected 6.9 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/333fe86968482ca701c609af590003bcea450e8f
- https://git.kernel.org/stable/c/81e921fd321614c2ad8ac333b041aae1da7a1c6d
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.