CVE-2026-43475

medium Red Hat
CVSS v3 Base Score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.0%
Exploitation probability in 30 days
Top 93% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: May 8, 2026 (6 days ago)
Last Modified: May 8, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's hv_storvsc component. When the kernel is configured with PREEMPT_RT (Real-Time Preemption) and running on a Hyper-V virtual machine, a local process performing specific I/O operations can trigger a concurrency issue. This can lead to a system lock-up or crash, resulting in a denial of service.

CWE

CWE-821

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org