CVE-2026-43147
kernel: Revert "PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV"
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 6, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel. A local user can cause a system deadlock by performing specific operations related to SR-IOV (Single Root I/O Virtualization) device removal. This occurs due to a recursive lock acquisition within the PCI (Peripheral Component Interconnect) subsystem, specifically when sriov_del_vfs() is called during device removal. The consequence is system unresponsiveness, leading to a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-833 · Deadlock