What’s Vulnerable › Vulnerabilities

CVE-2026-99080: fs: Free any excess xarray nodes in clear_inode()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-23 · updated 2026-10-26

Description

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.

Affected products

• Linux kernel: before 6.6.160; before 6.12.113; before 6.18.57; before 7.2.11 — fixed in 6.12.113, 6.18.57, 6.6.160, 7.2.11, 7.3

How to fix

Upgrade to a fixed version: Linux kernel 6.12.113, 6.18.57, 6.6.160, 7.2.11. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/21f51434c47d8628b62275ae6c6ad6b573abcd02
• https://git.kernel.org/stable/c/43f830e2bb84b22ca824b20bb861d823ecb520bd
• https://git.kernel.org/stable/c/50cff3f112d64db6e5f57355f79bc837db8fe132
• https://git.kernel.org/stable/c/ee3f011250104129893d8e9599147e457d4d7280
• https://git.kernel.org/stable/c/f1c966eb6ed5e190c90a56c5bdaa69967de39f21

Get alerted when CVE-2026-99080 or the next vulnerability affects your stack