Answer in brief
CVE-2026-68130 records a Unknown severity vulnerability in ksmbd: defer destroy_previous_session() until after NTLM authentication. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <5c833074b549e5db125436a6f681af682261f785 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <243f1614ef2aca2d62a744575f1c24b07cd42757 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <18705cace0619fd2123737dcd028147774f38181 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <0ff12308c8a6c16ab68f0a487ffa93d69001dc18 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <c74801ee524f477c174a1899782b6c3b6918d407 | 5c833074b549e5db125436a6f681af682261f785, 243f1614ef2aca2d62a744575f1c24b07cd42757, 18705cace0619fd2123737dcd028147774f38181, 0ff12308c8a6c16ab68f0a487ffa93d69001dc18, c74801ee524f477c174a1899782b6c3b6918d407 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-68130 records a Unknown severity vulnerability in ksmbd: defer destroy_previous_session() until after NTLM authentication. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <5c833074b549e5db125436a6f681af682261f785 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <243f1614ef2aca2d62a744575f1c24b07cd42757 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <18705cace0619fd2123737dcd028147774f38181 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <0ff12308c8a6c16ab68f0a487ffa93d69001dc18 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <c74801ee524f477c174a1899782b6c3b6918d407 | 5c833074b549e5db125436a6f681af682261f785, 243f1614ef2aca2d62a744575f1c24b07cd42757, 18705cace0619fd2123737dcd028147774f38181, 0ff12308c8a6c16ab68f0a487ffa93d69001dc18, c74801ee524f477c174a1899782b6c3b6918d407 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.