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.
Metrics
CVSS 3.1 8.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 87856f9af04eaacf9848710625a4ffee1d020fa9, < 0f2a35a0c7ea7da347b814750eaa78adf3582381; >= 4aeec3984ddc853f7c65903bde472ffdef738bae, < 8d65decde9afd2bd78bcfffdc0df73b82a0b5509; >= 4aeec3984ddc853f7c65903bde472ffdef738bae, < ef4c38d30b3744e89eb5048218904bb629ea8d47; >= 4aeec3984ddc853f7c65903bde472ffdef738bae, < 9e0a3f642e607848669235f5069f35640abbfc88; >= 4aeec3984ddc853f7c65903bde472ffdef738bae, < 42d758a09d2c46c42357ecde9a5492f015bde2e5; >= 4aeec3984ddc853f7c65903bde472ffdef738bae, < 52adb2dff7ce3d8430e2bdc5988b618a430def85; >= 4aeec3984ddc853f7c65903bde472ffdef738bae, < 278a5659c391fe5afe5f9ce1bad1fd24e90144f1; >= 4aeec3984ddc853f7c65903bde472ffdef738bae, < daedde7f024ecf88bc8e832ed40cf2c795f0796a; d62dccb417cf972c978bf3c68a7d5e846bcf953e; 6694b8daffac5a8661071f085608afc78f7acd08; >= 5.10.37, < 5.10.261; >= 5.11.21, < 5.12; >= 5.12.4, < 5.13 |
| Linux | Linux | 5.13 |
References
- https://git.kernel.org/stable/c/0f2a35a0c7ea7da347b814750eaa78adf3582381
- https://git.kernel.org/stable/c/278a5659c391fe5afe5f9ce1bad1fd24e90144f1
- https://git.kernel.org/stable/c/42d758a09d2c46c42357ecde9a5492f015bde2e5
- https://git.kernel.org/stable/c/52adb2dff7ce3d8430e2bdc5988b618a430def85
- https://git.kernel.org/stable/c/8d65decde9afd2bd78bcfffdc0df73b82a0b5509
- https://git.kernel.org/stable/c/9e0a3f642e607848669235f5069f35640abbfc88
- https://git.kernel.org/stable/c/daedde7f024ecf88bc8e832ed40cf2c795f0796a
- https://git.kernel.org/stable/c/ef4c38d30b3744e89eb5048218904bb629ea8d47
Timeline
- Published
- Jul 25, 2026
- Last modified
- Nov 12, 2026
- NVD status
- Analyzed