CVE-2026-43214

medium Red Hat
CVSS v3 Base Score
7.0
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: May 6, 2026 (8 days ago)
Last Modified: May 6, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) for x86 architectures. When reading Page Directory Pointer Table Registers (PDPTRs) in the `__get_sregs2()` function, the system fails to use proper Sleepable Read-Copy Update (SRCU) protection. This oversight can lead to incorrect memory access when dereferencing memory slots, potentially allowing a guest operating system to cause a denial of service on the host system.

CWE

CWE-820

Affected Products

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

References

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