PT-2026-64696 · Linux · Linux

CVE-2026-64475 · Publicado 2026-07-25 · Atualizado 2026-07-25

NVD

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.

Identificadores relacionados

CVE-2026-64475

Produtos afetados

Linux

Referências · 9

• https://git.kernel.org/stable/c/278a5659c391fe5afe5f9ce1bad1fd24e90144f1 · Nota
• https://git.kernel.org/stable/c/42d758a09d2c46c42357ecde9a5492f015bde2e5 · Nota
• https://git.kernel.org/stable/c/0f2a35a0c7ea7da347b814750eaa78adf3582381 · Nota
• https://git.kernel.org/stable/c/ef4c38d30b3744e89eb5048218904bb629ea8d47 · Nota
• https://git.kernel.org/stable/c/9e0a3f642e607848669235f5069f35640abbfc88 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-64475 · Nota de Segurança
• https://git.kernel.org/stable/c/8d65decde9afd2bd78bcfffdc0df73b82a0b5509 · Nota
• https://git.kernel.org/stable/c/52adb2dff7ce3d8430e2bdc5988b618a430def85 · Nota
• https://git.kernel.org/stable/c/daedde7f024ecf88bc8e832ed40cf2c795f0796a · Nota