CVE-2026-46284

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

MEDIUM
5.5
CVSS Score
Published: June 8, 2026 at 03:41 PM UTC
Updated: July 23, 2026 at 07:32 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.15 ≤ v < 6.18.276.15 ≤ v < 7.0.46.15 ≤ v < 7.16.19 ≤ v < 7.0.45b47c02967ab770aa7661c8863a21b2fd59e35ff6.15
Vendor states this is fixed in 2774bcf714739cc6bb86f8812167bb9fbda70f6a (fixed)
Vendor states this is fixed in 357c6d084b6137ae640209c5bfd01180f985c015 (fixed)
Vendor states this is fixed in c45b354911d01565156e38d7f6bc07edb51fc34c (fixed)
Vendor states this is fixed in 6.15 (unaffected)
Vendor states this is fixed in 6.18.27 (unaffected)
Vendor states this is fixed in 7.0.4 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-476

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