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Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: vfio: Remove device debugfs before releasing devres VFIO device debugfs files… (CVE-2026-64473)

0
Medium
Published: 07/25/2026 (07/25/2026, 10:17:00 UTC)
Source: GCVE Database
Product: linux-hwe-edge

Description

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.

Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-fm4h-cjxv-2ppf
Osv Schema Version
1.4.0
Aliases
["CVE-2026-64473"]
Ecosystems
[]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a6542069c2644c7f80823d0

Added to database: 07/25/2026, 23:08:54 UTC

Last enriched: 08/15/2026, 02:25:16 UTC

Last updated: 09/07/2026, 10:52:10 UTC

Views: 50

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