CVE-2026-68130
Vulnerability Scoring
Analysis In Progress
CVE-2026-68130 Vulnerability Analysis & Exploit Details
CVE-2026-68130
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2026-68130 Details
Status: Received on 10 Aug 2026, 13:19 UTC
Last updated: 🕐 23 Aug 2026, 13:16 UTC
Originally published on: 🕐 10 Aug 2026, 13:19 UTC
Time between publication and last update: 12 days
CVSS Release:
CVE-2026-68130 Vulnerability Summary
CVE-2026-68130: In the Linux kernel, the following vulnerability has been resolved: ksmbd: defer destroy_previous_session() until after NTLM authentication In ntlm_authenticate(), destroy_previous_session() is called using a user pointer resolved from the client-supplied NTLM blob username field before the NTLMv2 response is validated. An authenticated attacker can set the NTLM blob username to match a victim account and set PreviousSessionId to the victim's session ID; destroy_previous_session() destroys the victim's session while ksmbd_decode_ntlmssp_auth_blob() subsequently rejects the request with -EPERM. Move destroy_previous_session() and the prev_id assignment to after ksmbd_decode_ntlmssp_auth_blob() returns success and use sess->user rather than the pre-authentication lookup result. This matches the ordering already used by krb5_authenticate(), where destroy_previous_session() is called only after ksmbd_krb5_authenticate() returns success.
Assessing the Risk of CVE-2026-68130
Access Complexity Graph
The exploitability of CVE-2026-68130 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2026-68130
No exploitability data is available for CVE-2026-68130.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2026-68130, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2026-68130, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2026-68130 does not compromise confidentiality.
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Integrity:
None
CVE-2026-68130 does not impact data integrity.
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Availability:
None
CVE-2026-68130 does not affect system availability.
CVE-2026-68130 References
External References
- https://git.kernel.org/stable/c/0ff12308c8a6c16ab68f0a487ffa93d69001dc18
- https://git.kernel.org/stable/c/18705cace0619fd2123737dcd028147774f38181
- https://git.kernel.org/stable/c/243f1614ef2aca2d62a744575f1c24b07cd42757
- https://git.kernel.org/stable/c/370b0ec8822b69c9073265e16b7daaa8201c9a4f
- https://git.kernel.org/stable/c/5c833074b549e5db125436a6f681af682261f785
- https://git.kernel.org/stable/c/ab0230257ebdf48b07eaa679a8c92bc842fe3498
- https://git.kernel.org/stable/c/c74801ee524f477c174a1899782b6c3b6918d407
CWE Common Weakness Enumeration
Unknown
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