# fs/ntfs3: fix out-of-bounds read of INDEX_ROOT in reparse/objid init

CVE record · `CVE-2026-89785`

- **Identifiers:** `CVE-2026-89785`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 08:48 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: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before eb80003744e32a7366a523015e4acfe0a2ac7d88` (git)
  - affected: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before bd631e2005290a55c8edda87363bc0d594c01705` (git)
  - affected: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before 94fce1d3e74fe011e21f17490ba58491709fd7e5` (git)
  - affected: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before 66c074eab6f966fbe48a0fc4b3a45b2a2e2df527` (git)
  - affected: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before 64bb6000bfbdf241a6dd578199acd90321a4243e` (git)
  - affected: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before 72caafbc95c5dca8266a942b8e96ad81d8d9adc7` (git)
  - affected: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before 2064bc663f89e61b8681c1fb9d1ce445de72063d` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.15`
  - unaffected: `before 5.15` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 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:** 0.0021, the 11th percentile, on 14 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89785](https://www.cve.org/CVERecord?id=CVE-2026-89785)
- [NVD: CVE-2026-89785](https://nvd.nist.gov/vuln/detail/CVE-2026-89785)

### References from the CNA

- <https://git.kernel.org/stable/c/eb80003744e32a7366a523015e4acfe0a2ac7d88>
- <https://git.kernel.org/stable/c/bd631e2005290a55c8edda87363bc0d594c01705>
- <https://git.kernel.org/stable/c/94fce1d3e74fe011e21f17490ba58491709fd7e5>
- <https://git.kernel.org/stable/c/66c074eab6f966fbe48a0fc4b3a45b2a2e2df527>
- <https://git.kernel.org/stable/c/64bb6000bfbdf241a6dd578199acd90321a4243e>
- <https://git.kernel.org/stable/c/72caafbc95c5dca8266a942b8e96ad81d8d9adc7>
- <https://git.kernel.org/stable/c/2064bc663f89e61b8681c1fb9d1ce445de72063d>

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-2026-89785>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89785/>. Everything for agents: <https://agentprime.io/llms.txt>.