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

Received
AliasesUBUNTU-CVE-2026-90283DEBIAN-CVE-2026-90283
Published 17-09-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-90283 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.5% of scored vulnerabilities.

Priority
Insufficient evidence

No CVSS vector published; no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.23%
0%100%
Low · 0.00 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 11 · Related 11
OPENSUSE-SU-2026:11880-1OPENSUSE-SU-2026:22167-1SUSE-SU-2026:24371-1SUSE-SU-2026:24379-1SUSE-SU-2026:24386-1SUSE-SU-2026:24422-1

Timeline

  1. 17-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.23% 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

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: not stated in public data.

Ubuntu169 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 7ca02d0ae586fe7df59632966a64f3f1a756ef05, < f2d6cea221d777fab3ba18f805ba4c17c90e0b8b | ≥ 7ca02d0ae586fe7df59632966a64f3f1a756ef05, < 91c4f3a87862fd86594d5945512decbfa0b1d13d | ≥ 7ca02d0ae586fe7df59632966a64f3f1a756ef05, < 04f0354a4abf6793aa5b3f32e2b019ab206f344d | ≥ 7ca02d0ae586fe7df59632966a64f3f1a756ef05, < 5b7fc7a1ce2a5f2cd8ed80a883157c7108074e0b | ≥ 7ca02d0ae586fe7df59632966a64f3f1a756ef05, < 1d8be4ee81e73fcc52e58f47842d9a2277cfeaaa | ≥ 7ca02d0ae586fe7df59632966a64f3f1a756ef05, < dfe848cadfde4179a0691da34f4bed36ff7185b5 | ≥ 7ca02d0ae586fe7df59632966a64f3f1a756ef05, < dc2bd517ac0bce4ec7498644bd16b6db502df8e2 | ≥ 7ca02d0ae586fe7df59632966a64f3f1a756ef05, < 308ab73e97c87bd0e142b11758faab7f88d82854 | 4.1

3 vendors · 172 products

References

13 links
Show all 13 references