Medium 5.5Published Jun 8, 2026

CVE-2026-46284mm/hugetlb: fix early boot crash on parameters without '=' separator

Updated under an hour ago (Oct 27, 2026, 3:50 AM ET)

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 5b47c02967ab770aa7661c8863a21b2fd59e35ff before 2774bcf714739cc6bb86f8812167bb9fbda70f6a; from 5b47c02967ab770aa7661c8863a21b2fd59e35ff before 357c6d084b6137ae640209c5bfd01180f985c015; from 5b47c02967ab770aa7661c8863a21b2fd59e35ff before c45b354911d01565156e38d7f6bc07edb51fc34c	CNA record
linux linux_kernel linux:linux_kernel	from 6.15 before 6.18.27; from 6.19 before 7.0.4	NVD

References

References

https://git.kernel.org/stable/c/2774bcf714739cc6bb86f8812167bb9fbda70f6a	patch
https://git.kernel.org/stable/c/357c6d084b6137ae640209c5bfd01180f985c015	patch
https://git.kernel.org/stable/c/c45b354911d01565156e38d7f6bc07edb51fc34c	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.