CVE-2026-46280

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
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: June 8, 2026 (32 days ago)
Last Modified: June 8, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's Heterogeneous Memory Management (HMM) test module. When a device mirror (dmirror) structure is freed, its associated device private pages are not properly migrated back to system memory. This can lead to a use-after-free condition where a dangling pointer to the freed dmirror is dereferenced, potentially causing a kernel panic. A local attacker could exploit this to trigger a denial of service.

CWE

CWE-825

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