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NVD / CVE Program· CNA Linux

CVE-2026-90283: hugetlbfs: release subpool on fill_super failure

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 04f0354a4abf6793aa5b3f32e2b019ab206f344d, 1d8be4ee81e73fcc52e58f47842d9a2277cfeaaa, 308ab73e97c87bd0e142b11758faab7f88d82854.

Low priority for now. Upgrade to Linux Linux 04f0354a4abf6793aa5b3f32e2b019ab206f344d, 1d8be4ee81e73fcc52e58f47842d9a2277cfeaaa, 308ab73e97c87bd0e142b11758faab7f88d82854 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: hugetlbfs: release subpool on fill_super failure hugetlbfs_fill_super() allocates a hugepage subpool when size or min_size mount options are specified. hugepage_new_subpool() may also reserve huge pages for min_size. If root dentry creation fails after the subpool is created, the failure path frees the subpool with kfree(). This bypasses hugepage_put_subpool() and can leave min_size reservations charged. Use hugepage_put_subpool() on the failure path, matching the normal put_super path.

—No exploit Fix available
Published
Sep 17, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 13th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.1affected
    • 7ca02d0ae586fe7df59632966a64f3f1a756ef05 and later · before f2d6cea221d777fab3ba18f805ba4c17c90e0b8baffected · git
    • 7ca02d0ae586fe7df59632966a64f3f1a756ef05 and later · before 91c4f3a87862fd86594d5945512decbfa0b1d13daffected · git
    • 7ca02d0ae586fe7df59632966a64f3f1a756ef05 and later · before 04f0354a4abf6793aa5b3f32e2b019ab206f344daffected · git
    • 7ca02d0ae586fe7df59632966a64f3f1a756ef05 and later · before 5b7fc7a1ce2a5f2cd8ed80a883157c7108074e0baffected · git
    • 7ca02d0ae586fe7df59632966a64f3f1a756ef05 and later · before 1d8be4ee81e73fcc52e58f47842d9a2277cfeaaaaffected · git
    • 7ca02d0ae586fe7df59632966a64f3f1a756ef05 and later · before dfe848cadfde4179a0691da34f4bed36ff7185b5affected · git
    • 7ca02d0ae586fe7df59632966a64f3f1a756ef05 and later · before dc2bd517ac0bce4ec7498644bd16b6db502df8e2affected · git
    • 7ca02d0ae586fe7df59632966a64f3f1a756ef05 and later · before 308ab73e97c87bd0e142b11758faab7f88d82854affected · git
    • before 4.1not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-90281Sep 17, 2026 · phy: qcom: snps-femto-v2: Fix possible NULL-deref on early runtime suspend
    0Monitor
  • ← EarlierCVE-2026-90282Sep 17, 2026 · phy: qcom: qmp-usb-legacy: Fix possible NULL-deref on early runtime suspend
    0Monitor
  • Later →CVE-2026-90284Sep 17, 2026 · firmware_loader: do not queue completed sysfs fallback requests
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux04f0354a4abf6793aa5b3f32e2b019ab206f344dVendor (CNA)
Linux Linux1d8be4ee81e73fcc52e58f47842d9a2277cfeaaaVendor (CNA)
Linux Linux308ab73e97c87bd0e142b11758faab7f88d82854Vendor (CNA)
Linux Linux5b7fc7a1ce2a5f2cd8ed80a883157c7108074e0bVendor (CNA)
Linux Linux91c4f3a87862fd86594d5945512decbfa0b1d13dVendor (CNA)
Linux Linuxdc2bd517ac0bce4ec7498644bd16b6db502df8e2Vendor (CNA)
Linux Linuxdfe848cadfde4179a0691da34f4bed36ff7185b5Vendor (CNA)
Linux Linuxf2d6cea221d777fab3ba18f805ba4c17c90e0b8bVendor (CNA)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records