CVE-2026-90283

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.

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EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.12%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/04f0354a4abf6793aa5b3f32e2b019ab206f344d https://git.kernel.org/stable/c/1d8be4ee81e73fcc52e58f47842d9a2277cfeaaa https://git.kernel.org/stable/c/308ab73e97c87bd0e142b11758faab7f88d82854 https://git.kernel.org/stable/c/5b7fc7a1ce2a5f2cd8ed80a883157c7108074e0b https://git.kernel.org/stable/c/91c4f3a87862fd86594d5945512decbfa0b1d13d https://git.kernel.org/stable/c/dc2bd517ac0bce4ec7498644bd16b6db502df8e2 https://git.kernel.org/stable/c/dfe848cadfde4179a0691da34f4bed36ff7185b5 https://git.kernel.org/stable/c/f2d6cea221d777fab3ba18f805ba4c17c90e0b8b

Frequently Asked Questions

What is CVE-2026-90283? +

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.

How do I check if I'm vulnerable to CVE-2026-90283? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.