mm/hugetlb: fix early boot crash on parameters without '=' separator

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-46284
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-08 17:16:46 UTC
Updated2026-07-23 08:10:00 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.001210000 probability, percentile 0.022470000 (date 2026-07-09)

Problem Types: CWE-476

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 5b47c02967ab770aa7661c8863a21b2fd59e35ff 2774bcf714739cc6bb86f8812167bb9fbda70f6a git Not specified
CNA Linux Linux affected 5b47c02967ab770aa7661c8863a21b2fd59e35ff 357c6d084b6137ae640209c5bfd01180f985c015 git Not specified
CNA Linux Linux affected 5b47c02967ab770aa7661c8863a21b2fd59e35ff c45b354911d01565156e38d7f6bc07edb51fc34c git Not specified
CNA Linux Linux affected 6.15 Not specified
CNA Linux Linux unaffected 6.15 semver Not specified
CNA Linux Linux unaffected 6.18.27 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.4 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/357c6d084b6137ae640209c5bfd01180f985c015 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/2774bcf714739cc6bb86f8812167bb9fbda70f6a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c45b354911d01565156e38d7f6bc07edb51fc34c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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