# btrfs: balance: fix potential bg lookup failure in btrfs_may_alloc_data_chunk()

CVE record · `CVE-2026-97416`

- **Identifiers:** `CVE-2026-97416`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 24 Sept 2026
- **Updated:** 3 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 24 Sept 2026, 16:03 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `a6f93c71d412ba8ed743152c3a54ad0b78dcd9c7 to before 9f37a6d6ae9e998232e2ba091ab4999cdf967e1b` (git)
  - affected: `a6f93c71d412ba8ed743152c3a54ad0b78dcd9c7 to before e479236a8f4d85c4fb6b3f7c2556c21f583e2bf2` (git)
  - affected: `a6f93c71d412ba8ed743152c3a54ad0b78dcd9c7 to before 322f891b4d4fe64acb3351a0ffa62a7fa5ba7256` (git)
  - affected: `a6f93c71d412ba8ed743152c3a54ad0b78dcd9c7 to before 81a664ed8b1a44c76b204c4bd0d751317a02c5cd` (git)
  - affected: `a6f93c71d412ba8ed743152c3a54ad0b78dcd9c7 to before 9740dd0c17a4be8cc47a06c5ca5293471a7e286e` (git)
  - affected: `a6f93c71d412ba8ed743152c3a54ad0b78dcd9c7 to before 59f75e0c8724d4adebc08c7dd3ff2358b80c21f7` (git)
  - affected: `a6f93c71d412ba8ed743152c3a54ad0b78dcd9c7 to before 18d32b0013efba19f7ad3e5b08d7aee813d604a6` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.16`
  - unaffected: `before 4.16` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0017, the 6th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 24 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-97416](https://www.cve.org/CVERecord?id=CVE-2026-97416)
- [NVD: CVE-2026-97416](https://nvd.nist.gov/vuln/detail/CVE-2026-97416)

### References from the CNA

- <https://git.kernel.org/stable/c/9f37a6d6ae9e998232e2ba091ab4999cdf967e1b>
- <https://git.kernel.org/stable/c/e479236a8f4d85c4fb6b3f7c2556c21f583e2bf2>
- <https://git.kernel.org/stable/c/322f891b4d4fe64acb3351a0ffa62a7fa5ba7256>
- <https://git.kernel.org/stable/c/81a664ed8b1a44c76b204c4bd0d751317a02c5cd>
- <https://git.kernel.org/stable/c/9740dd0c17a4be8cc47a06c5ca5293471a7e286e>
- <https://git.kernel.org/stable/c/59f75e0c8724d4adebc08c7dd3ff2358b80c21f7>
- <https://git.kernel.org/stable/c/18d32b0013efba19f7ad3e5b08d7aee813d604a6>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-97416>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-97416/>. Everything for agents: <https://agentprime.io/llms.txt>.