CVE-2026-46284
kernel: mm/hugetlb: fix early boot crash on parameters without '=' separator
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 8, 2026
Updated · July 9, 2026
Description
A flaw was found in the Linux kernel's hugetlb memory management. A local user could exploit this by providing malformed kernel command-line parameters, such as hugepages or hugepagesz, without an '=' separator. This improper handling of input during early parameter parsing can lead to a system crash, resulting in a Denial of Service (DoS) during the boot process.
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-476 · NULL Pointer Dereference