Microsoft · ksmbd: safely discard unregistered deferred locks
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in ecdcfa15b3d799476c685cecd433ebefc93015c8 : update Microsoft when convenient.
Data as of 7 Nov 2026, 13:47 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in ecdcfa15b3d799476c685cecd433ebefc93015c8, d09af9a35ff7b77a950b507133d9092aadbfeff4, aaa51ac0d934cb4e2ab96e150fccc934e822009b +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 7 Nov 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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AI-suggested
No official fixes or workarounds are provided in the available information.
Description
CVE-2026-90156 concerns a vulnerability in the ksmbd component related to the safe handling of unregistered deferred locks. The provided information does not include technical details about the nature of the flaw, its impact, or exploitation methods. The affected versions are 3.0 and 4.0. No CVSS score or vendor advisory details are available to clarify the severity or remediation status.