CVE-2026-46284 Details
Description
In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix early boot crash on parameters without '=' separator If hugepages, hugepagesz, or default_hugepagesz are specified on the kernel command line without the '=' separator, early parameter parsing passes NULL to hugetlb_add_param(), which dereferences it in strlen() and can crash the system during early boot. Reject NULL values in hugetlb_add_param() and return -EINVAL instead.
A vulnerability in the Linux kernel's handling of hugepage parameters during early boot has been fixed. When hugepages, hugepagesz, or default_hugepagesz are specified on the kernel command line without the '=' separator, the parameter parsing incorrectly passes a NULL value to the 'hugetlb_add_param()' function. This NULL dereference can lead to a system crash. The vulnerability has been addressed by modifying 'hugetlb_add_param()' to reject NULL values and return an error instead.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched version are available on the Linux kernel official website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/2774bcf714739cc6bb86f8812167bb9fbda70f6a | kernel.org | Patch |
| https://git.kernel.org/stable/c/357c6d084b6137ae640209c5bfd01180f985c015 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c45b354911d01565156e38d7f6bc07edb51fc34c | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.15, < 6.18.27 >= 6.19, < 7.0.4 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jul 8, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 8, 2026 | New CVE Received | kernel.org |