Answer in brief
CVE-2025-38191 records a Unknown severity vulnerability in ksmbd: fix null pointer dereference in destroy_previous_session. 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 | >=0626e6641f6b467447c81dd7678a69c66f7746cf <281afc52e2961cd5dd8326ebc9c5bc40904c0468 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <0902625a24eea7fdc187faa5d97df244d159dd6e || >=0626e6641f6b467447c81dd7678a69c66f7746cf <1193486dffb7432a09f57f5d09049b4d4123538b || >=0626e6641f6b467447c81dd7678a69c66f7746cf <076f1adefb9837977af7ed233883842ddc446644 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <7ac5b66acafcc9292fb935d7e03790f2b8b2dc0e | 281afc52e2961cd5dd8326ebc9c5bc40904c0468, 0902625a24eea7fdc187faa5d97df244d159dd6e, 1193486dffb7432a09f57f5d09049b4d4123538b, 076f1adefb9837977af7ed233883842ddc446644, 7ac5b66acafcc9292fb935d7e03790f2b8b2dc0e |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Jul 4, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in destroy_previous_session If client set ->PreviousSessionId on kerberos session setup stage, NULL pointer dereference error will happen. Since sess->user is not set yet, It can pass the user argument as NULL to destroy_previous_session. sess->user will be set in ksmbd_krb5_authenticate(). So this patch move calling destroy_previous_session() after ksmbd_krb5_authenticate().
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-38191 records a Unknown severity vulnerability in ksmbd: fix null pointer dereference in destroy_previous_session. 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 | >=0626e6641f6b467447c81dd7678a69c66f7746cf <281afc52e2961cd5dd8326ebc9c5bc40904c0468 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <0902625a24eea7fdc187faa5d97df244d159dd6e || >=0626e6641f6b467447c81dd7678a69c66f7746cf <1193486dffb7432a09f57f5d09049b4d4123538b || >=0626e6641f6b467447c81dd7678a69c66f7746cf <076f1adefb9837977af7ed233883842ddc446644 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <7ac5b66acafcc9292fb935d7e03790f2b8b2dc0e | 281afc52e2961cd5dd8326ebc9c5bc40904c0468, 0902625a24eea7fdc187faa5d97df244d159dd6e, 1193486dffb7432a09f57f5d09049b4d4123538b, 076f1adefb9837977af7ed233883842ddc446644, 7ac5b66acafcc9292fb935d7e03790f2b8b2dc0e |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Jul 4, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in destroy_previous_session If client set ->PreviousSessionId on kerberos session setup stage, NULL pointer dereference error will happen. Since sess->user is not set yet, It can pass the user argument as NULL to destroy_previous_session. sess->user will be set in ksmbd_krb5_authenticate(). So this patch move calling destroy_previous_session() after ksmbd_krb5_authenticate().
Quoted source text, attributed separately from HOL analysis.