Not yet scoredPublished Jul 25, 2026

CVE-2026-64473vfio: Remove device debugfs before releasing devres

Updated under an hour ago (Oct 27, 2026, 11:10 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: vfio: Remove device debugfs before releasing devres VFIO device debugfs files created with debugfs_create_devm_seqfile() store a devres allocated debugfs_devm_entry as inode private data. vfio_unregister_group_dev() currently calls vfio_device_del() before vfio_device_debugfs_exit(), but device_del() releases devres. This can leave debugfs entries visible with stale inode private data while unregister waits for userspace references to drain. Remove the per-device debugfs tree before vfio_device_del(). The debugfs view is diagnostic only, so losing it at the start of unregister is preferable to preserving entries whose backing storage may already have been released. Complete the teardown by clearing the per-device debugfs root after removal. This matches the global debugfs root cleanup and prevents future users from mistaking a removed dentry for a live debugfs tree during the remainder of unregister.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Aug 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	2202844e4468c7539dba0c0b06577c93735af952 builds before 6cc60b41d61657dc469893d14e8e55d160056ff1; from 2202844e4468c7539dba0c0b06577c93735af952 before a53109ffb6b5148e11a27fb7670355b92db12dd3; from 2202844e4468c7539dba0c0b06577c93735af952 before a5df401dc84f091e20b045560569f0736758fea7; from 2202844e4468c7539dba0c0b06577c93735af952 before dc7fe87de492ea7f33a72b78d26650b75bf37f4f	CNA record

References

References

https://git.kernel.org/stable/c/6cc60b41d61657dc469893d14e8e55d160056ff1
https://git.kernel.org/stable/c/a53109ffb6b5148e11a27fb7670355b92db12dd3
https://git.kernel.org/stable/c/a5df401dc84f091e20b045560569f0736758fea7
https://git.kernel.org/stable/c/dc7fe87de492ea7f33a72b78d26650b75bf37f4f

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.