CVE-2026-99080

fs: Free any excess xarray nodes in clear_inode()

No known exploitation. No EPSS score yet. Fixed versions are out.

CVSS —Not scored EPSS percentile—No score yet CISA KEVNot listedNo confirmed exploitation
No public exploit known Fix1 product4 fixed builds listed below

Published 2026-10-23Updated 2026-10-23Sources: CVE.org, NVD

NVD CVE.org

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LinuxAffected: ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f1c966eb6ed5e190c90a56c5bdaa69967de39f21Upgrade to: f1c966eb6ed5e190c90a56c5bdaa69967de39f21Affected: ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 21f51434c47d8628b62275ae6c6ad6b573abcd02Upgrade to: 21f51434c47d8628b62275ae6c6ad6b573abcd02Affected: ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 50cff3f112d64db6e5f57355f79bc837db8fe132Upgrade to: 50cff3f112d64db6e5f57355f79bc837db8fe132Affected: ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 43f830e2bb84b22ca824b20bb861d823ecb520bdUpgrade to: 43f830e2bb84b22ca824b20bb861d823ecb520bd + 5 more branchesStated by: CVE record

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What it is

From the CVE record

In the Linux kernel, the following vulnerability has been resolved: fs: Free any excess xarray nodes in clear_inode() For many years we've had a hard to hit leak of xarray nodes. Hugh documented it well in commit 786b31121a2c. Recently people and syzbot have found ways to force it to happen with madvise. Rather than fix the leaks where they happen, just call xa_destroy() which has the side-effect of cycling the i_pages lock.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

CISA KEV: Not in the catalog. CISA has not confirmed exploitation.
Public exploits: No public exploit or proof of concept found in the sources we track.
EPSS: No EPSS score yet. New CVEs are usually scored within a few days.