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.

• 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

Published

Sep 17, 2026

Last Modified

Sep 17, 2026

Status

Received

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