5.5

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

Analyzed
AliasesUBUNTU-CVE-2026-46284DEBIAN-CVE-2026-46284
Published 08-06-2026Last modified 14-06-2026

Vulnerability summary

CVE-2026-46284 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 7
OPENSUSE-SU-2026:11014-1USN-8488-1USN-8488-2USN-8489-1USN-8507-1USN-8569-1

Timeline

  1. 08-06-2026
    PublishedVulnerability first disclosed.
  2. 14-06-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Decrease -0.04 pp

From 0.16% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu108 products
  • linuxAll versions (No fix recorded) | < 7.0.0-27.27
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 7.0.0-1008.8
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 5b47c02967ab770aa7661c8863a21b2fd59e35ff, < 2774bcf714739cc6bb86f8812167bb9fbda70f6a | ≥ 5b47c02967ab770aa7661c8863a21b2fd59e35ff, < 357c6d084b6137ae640209c5bfd01180f985c015 | ≥ 5b47c02967ab770aa7661c8863a21b2fd59e35ff, < c45b354911d01565156e38d7f6bc07edb51fc34c | 6.15
  • linux_kernel≥ 6.15, < 6.18.27 | ≥ 6.19, < 7.0.4
Debian1 product
  • linux< 7.0.4-1

3 vendors · 111 products

References

13 links
Show all 13 references