CVE WatchJul 15, 2026

CVE-2026-53322

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Clean up DMABUFs before disabling function On device shutdow

CVSS

8.8

High

EPSS

0.1%

KEV

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Exploit Today

0-100

Published: Jun 26, 2026 · Last modified: Jul 15, 2026 · CWE-415 · CWE-826

EPSS · 30d

0.1%EPSS · 30 days0.4%

2026-08-032026-08-31

Technical description

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Clean up DMABUFs before disabling function On device shutdown, make vfio_pci_core_close_device() call vfio_pci_dma_buf_cleanup() before the function is disabled via vfio_pci_core_disable(). This ensures that all access via DMABUFs is revoked before the function's BARs become inaccessible. This fixes an issue where, if the function is disabled first, a tiny window exists in which the function's MSE is cleared and yet BARs could still be accessed via the DMABUF. The resources would also be freed and up for grabs by a different driver.

Official references

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