CVE-2026-90200: Linux kernel · fs/ntfs3: fix integer overflow in MFT cluster validation
Source GCVE Database
Not known to be exploited · fixed in f77a8d9fdf58e298b36564a44c27fadc617bdd28 : update Linux kernel when convenient.
Data as of 30 Oct 2026, 19:03 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in f77a8d9fdf58e298b36564a44c27fadc617bdd28, dc6d85de7e2656e56e10ff5ba514f2583a4f612b, c510c63873103a5da6a498fe537bdb5d6f8d03a2 +3
Exploitation evidence
Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available that adds proper overflow checks during MFT cluster validation in the ntfs3 driver. Users should apply the official Linux kernel update that includes this fix. No additional mitigation is required as the issue is resolved by the patch.
Description
A vulnerability in the Linux kernel's ntfs3 filesystem driver involves an integer overflow during Master File Table (MFT) cluster validation. The flaw allows malformed MFT cluster numbers to bypass validation due to multiplication overflow, potentially causing mount failures. The issue has been fixed by adding proper overflow checks during validation.
References
- nvd.nist.gov/vuln/detail/CVE-2026-90200 (opens in a new tab)
- git.kernel.org/stable/c/169383d8914b8fe03464a83540b5b6de3e7831af (opens in a new tab)
- git.kernel.org/stable/c/805cc5554b13d045dce9b03c13eaf015418739fd (opens in a new tab)
- git.kernel.org/stable/c/8ecb1525a9520acd3d5ea3e2593e487fd9f143ce (opens in a new tab)
- git.kernel.org/stable/c/c510c63873103a5da6a498fe537bdb5d6f8d03a2 (opens in a new tab)
- git.kernel.org/stable/c/dc6d85de7e2656e56e10ff5ba514f2583a4f612b (opens in a new tab)
- git.kernel.org/stable/c/f77a8d9fdf58e298b36564a44c27fadc617bdd28 (opens in a new tab)