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.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/0f2a35a0c7ea7da347b814750eaa78adf3582381 Patch
- git.kernel.org/stable/c/278a5659c391fe5afe5f9ce1bad1fd24e90144f1 Patch
- git.kernel.org/stable/c/42d758a09d2c46c42357ecde9a5492f015bde2e5 Patch
- git.kernel.org/stable/c/52adb2dff7ce3d8430e2bdc5988b618a430def85 Patch
- git.kernel.org/stable/c/8d65decde9afd2bd78bcfffdc0df73b82a0b5509 Patch
- git.kernel.org/stable/c/9e0a3f642e607848669235f5069f35640abbfc88 Patch
- git.kernel.org/stable/c/daedde7f024ecf88bc8e832ed40cf2c795f0796a Patch
- git.kernel.org/stable/c/ef4c38d30b3744e89eb5048218904bb629ea8d47 Patch
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 13 November 2026
- CWE
- CWE-416
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