Status: UPDATED | Advisory ID: CVE-2026-52953
| CVE | CVE-2026-52953 |
| CVSS Score / Version | |
| Updated | 2026-10-16 |
| CVSS Vector | |
| CVSS Prose | |
| Affected products | |
| Classified as |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| Linux | Linux Kernel |
| Subsystems | OT Supporting Infrastructure |
| Sectors | All Sectors |
In the Linux kernel, the following vulnerability has been resolved:
iommu/vt-d: Fix oops due to out of scope access
Below oops triggers when kill QEMU process:
Oops: general protection fault, probably for non-canonical address 0x7fffffff844eaaa7: 0000 [#1] SMP NOPTI
Call Trace:
<TASK>
do_raw_spin_lock+0xaa/0xc0
_raw_spin_lock_irqsave+0x21/0x40
domain_remove_dev_pasid+0x52/0x160
intel_nested_set_dev_pasid+0x1b9/0x1e0
__iommu_set_group_pasid+0x56/0x120
pci_dev_reset_iommu_done+0xe3/0x180
pcie_flr+0x65/0x160
__pci_reset_function_locked+0x5b/0x120
vfio_pci_core_close_device+0x63/0xe0 [vfio_pci_core]
vfio_df_close+0x4f/0xa0
vfio_df_unbind_iommufd+0x2d/0x60
vfio_device_fops_release+0x3e/0x40
__fput+0xe5/0x2c0
task_work_run+0x58/0xa0
do_exit+0x2c8/0x600
do_group_exit+0x2f/0xa0
get_signal+0x863/0x8c0
arch_do_signal_or_restart+0x24/0x100
exit_to_user_mode_loop+0x87/0x380
do_syscall_64+0x2ff/0x11e0
entry_SYSCALL_64_after_hwframe+0x76/0x7e
The global static blocked domain is a dummy domain without corresponding
dmar_domain structure, accessing beyond iommu_domain structure triggers
oops easily. Fix it by return early in domain_remove_dev_pasid() like
identity domain. (NVD)
Monitor Linux's web page for any future patch releases.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-52953 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-52953 |