CVE-2026-46284
mm/hugetlb: fix early boot crash on parameters without '=' separator
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.
INFO
Published Date :
June 8, 2026, 5:16 p.m.
Last Modified :
July 23, 2026, 8:10 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel to a version with the fix.
- Ensure kernel command line parameters use the '=' separator.
- Validate parameter parsing logic.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-46284.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-46284 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-46284
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-46284 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-46284 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 23, 2026
Action Type Old Value New Value Added Translation Title: Linux, Description: En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: mm/hugetlb: corrige un fallo de arranque temprano en parámetros sin el separador '=' Si hugepages, hugepagesz o default_hugepagesz se especifican en la línea de comandos del kernel sin el separador '=', el análisis temprano de parámetros pasa NULL a hugetlb_add_param(), lo que lo desreferencia en strlen() y puede provocar un fallo del sistema durante el arranque temprano. Rechazar valores NULL en hugetlb_add_param() y devolver -EINVAL en su lugar. -
Initial Analysis by [email protected]
Jul. 08, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.15 up to (excluding) 6.18.27 Added Reference Type kernel.org: https://git.kernel.org/stable/c/2774bcf714739cc6bb86f8812167bb9fbda70f6a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/357c6d084b6137ae640209c5bfd01180f985c015 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c45b354911d01565156e38d7f6bc07edb51fc34c Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5b47c02967ab770aa7661c8863a21b2fd59e35ff', 'lessThan': '2774bcf714739cc6bb86f8812167bb9fbda70f6a', 'versionType': 'git'}, {'status': 'affected', 'version': '5b47c02967ab770aa7661c8863a21b2fd59e35ff', 'lessThan': '357c6d084b6137ae640209c5bfd01180f985c015', 'versionType': 'git'}, {'status': 'affected', 'version': '5b47c02967ab770aa7661c8863a21b2fd59e35ff', 'lessThan': 'c45b354911d01565156e38d7f6bc07edb51fc34c', 'versionType': 'git'}], 'programFiles': ['mm/hugetlb.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.15'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.15', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.27', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.4', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['mm/hugetlb.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 08, 2026
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/2774bcf714739cc6bb86f8812167bb9fbda70f6a Added Reference https://git.kernel.org/stable/c/357c6d084b6137ae640209c5bfd01180f985c015 Added Reference https://git.kernel.org/stable/c/c45b354911d01565156e38d7f6bc07edb51fc34c