CVE-2026-64475High· 8.8▾ TwilightIn 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
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.
Linux >= 87856f9af04eaacf9848710625a4ffee1d020fa9 < 0f2a35a0c7ea7da347b814750eaa78adf3582381Linux >= 4aeec3984ddc853f7c65903bde472ffdef738bae < 8d65decde9afd2bd78bcfffdc0df73b82a0b5509Linux >= 4aeec3984ddc853f7c65903bde472ffdef738bae < ef4c38d30b3744e89eb5048218904bb629ea8d47Linux >= 4aeec3984ddc853f7c65903bde472ffdef738bae < 9e0a3f642e607848669235f5069f35640abbfc88Linux >= 4aeec3984ddc853f7c65903bde472ffdef738bae < 42d758a09d2c46c42357ecde9a5492f015bde2e5Linux >= 4aeec3984ddc853f7c65903bde472ffdef738bae < 52adb2dff7ce3d8430e2bdc5988b618a430def85Linux >= 4aeec3984ddc853f7c65903bde472ffdef738bae < 278a5659c391fe5afe5f9ce1bad1fd24e90144f1Linux >= 4aeec3984ddc853f7c65903bde472ffdef738bae < daedde7f024ecf88bc8e832ed40cf2c795f0796aLinux d62dccb417cf972c978bf3c68a7d5e846bcf953eLinux 6694b8daffac5a8661071f085608afc78f7acd08Linux >= 5.10.37 < 5.10.261Linux >= 5.11.21 < 5.12Linux >= 5.12.4 < 5.13Linux 5.13Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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