Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.19, < 7.0.10 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/4f1000a30f67cf7d328059242776a858611d5ef9Patch
- https://git.kernel.org/stable/c/d97708701434ce72968e771976aaf9d3438fcafdPatch
- https://access.redhat.com/security/cve/CVE-2026-53322Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2493709Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53322.jsonThird Party Advisory
FAQ
What is CVE-2026-53322?
CVE-2026-53322 is a vulnerability with a CVSS score of 8.8 (HIGH). 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_c...
How severe is CVE-2026-53322?
CVE-2026-53322 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53322?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.