CVE-2026-64475
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
43/100
Published: 2026-07-25
Modified: 2026-11-12
First seen: 2026-11-03
Status: active
Attack Surface
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
Scope Change
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Changed
C:
High
I:
High
A:
High
Description
In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Release the VGA arbiter client on register_device() failure The re-order in the Fixes commit below displaced vfio_pci_vga_init() as the last failure point of what is now vfio_pci_core_register_device() without introducing an unwind for the VGA arbiter registration. In current kernels this is mostly benign because vfio_pci_set_decode() only uses pci_dev state, but the original failure path could leave a callback with a freed vdev cookie. The stale registration also becomes unsafe again once the callback follows drvdata to the vfio device. Add the required VGA unwind callout.
Weakness Classification (1)
Affected Software (2)
| Vendor | Product | Version |
|---|---|---|
| linux | linux_kernel | 5.10.37 – 5.10.261 |
| linux | linux_kernel | 7.2 |