CVE-2026-43129

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: 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 Integrity Measurement Architecture (IMA) subsystem. When a second-stage kernel is booted via kexec with a memory-limiting command line, the IMA measurement buffer from the previous kernel may fall outside the new kernel's addressable memory. This out-of-bounds access can trigger a page fault during early system restoration, potentially leading to system instability or a denial of service.

CWE

CWE-805

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