CVE-2026-68130: ksmbd: defer destroy_previous_session() until after NTLM authentication
CSIRTS triage
- What
- The destroy_previous_session() function in ksmbd is called before NTLM authentication completes, allowing session manipulation.
- Who is affected
- Linux systems running ksmbd SMB server with NTLM authentication enabled.
- Urgency
- High severity with CVSS 7.1; authentication bypass could allow unauthorized access prior to proper credential validation.
- Action
- Apply Linux kernel patch deferring destroy_previous_session() until after NTLM authentication is complete.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68130
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-681300.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-68130 | coverage & exploitation status | NVD · CVE.org |
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