# fs/ntfs3: fix integer overflow in MFT cluster validation CVE record · `CVE-2026-90200` - **Identifiers:** `CVE-2026-90200` - **State:** Confirmed - **Severity:** No CVSS score - **Critical:** No - **CNA:** Linux - **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md) - **Published:** 17 Sept 2026 - **Updated:** 30 Oct 2026 - **Reviewed by a person:** No Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:07 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 8ecb1525a9520acd3d5ea3e2593e487fd9f143ce` (git) - affected: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before f77a8d9fdf58e298b36564a44c27fadc617bdd28` (git) - affected: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before 805cc5554b13d045dce9b03c13eaf015418739fd` (git) - affected: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before dc6d85de7e2656e56e10ff5ba514f2583a4f612b` (git) - affected: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before 169383d8914b8fe03464a83540b5b6de3e7831af` (git) - affected: `82cae269cfa953032fbb8980a7d554d60fb00b17 to before c510c63873103a5da6a498fe537bdb5d6f8d03a2` (git) - Other versions: unaffected - Vendor: Linux. Product: Linux. - affected: `5.15` - unaffected: `before 5.15` (semver) - unaffected: `6.1.191 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 ## Machine-written summary Summary written by Claude Haiku from the source advisory. Not reviewed by a person. > CVE-2026-90200 affects the Linux kernel's fs/ntfs3 driver, which mounts NTFS volumes. A integer overflow in the MFT cluster number check during boot-sector validation could let a malformed boot sector pass validation. The source describes the practical effect as mount failures rather than a more serious outcome. Affected kernels are listed by commit ranges and by version; upgrade to a fixed stable release from the affected branch. Written 12 Nov 2026. ## 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:** 0.0022, the 13th percentile, on 13 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 17 Sept 2026. New records show when each source confirmed them. ## Sources - [CVE List: CVE-2026-90200](https://www.cve.org/CVERecord?id=CVE-2026-90200) - [NVD: CVE-2026-90200](https://nvd.nist.gov/vuln/detail/CVE-2026-90200) ### References from the CNA - - - - - - 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 (), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: - As JSON: - Everything that needs attention now: --- The web page: . Everything for agents: .