DEBIAN-CVE-2025-40219

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2025-40219
Published: 04 Dec 2025, 15:15
Last modified:15 Jun 2026, 18:48

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Dec 2025, 15:15
Published
Vulnerability first disclosed
15 Jun 2026, 18:48
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: PCI/IOV: Fix race between SR-IOV enable/disable and hotplug Commit 05703271c3cd ("PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV") tried to fix a race between the VF removal inside sriov_del_vfs() and concurrent hot unplug by taking the PCI rescan/remove lock in sriov_del_vfs(). Similarly the PCI rescan/remove lock was also taken in sriov_add_vfs() to protect addition of VFs. This approach however causes deadlock on trying to remove PFs with SR-IOV enabled because PFs disable SR-IOV during removal and this removal happens under the PCI rescan/remove lock. So the original fix had to be reverted. Instead of taking the PCI rescan/remove lock in sriov_add_vfs() and sriov_del_vfs(), fix the race that occurs with SR-IOV enable and disable vs hotplug higher up in the callchain by taking the lock in sriov_numvfs_store() before calling into the driver's sriov_configure() callback.

Affected Systems

  • debian•linux

    < 5.10.247-1 | < 6.1.158-1 | < 6.12.57-1 | < 6.17.6-1 | all | all | all | < 5.10.257-1 | < 6.1.170-1 | < 6.12.85-1 | < 6.19.6-1

  • debian•linux-6.1

    < 6.1.170-1~deb11u1

References (1)