Answer in brief
CVE-2025-37777 records a Unknown severity vulnerability in ksmbd: fix use-after-free in __smb2_lease_break_noti(). 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 <1da8bd9a10ecd718692732294d15fd801c0eabb5 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <1aec4d14cf81b7b3e7b69eb1cfa94144eed7138e || >=0626e6641f6b467447c81dd7678a69c66f7746cf <e59796fc80603bcd8569d4d2e10b213c1918edb4 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <21a4e47578d44c6b37c4fc4aba8ed7cc8dbb13de | 1da8bd9a10ecd718692732294d15fd801c0eabb5, 1aec4d14cf81b7b3e7b69eb1cfa94144eed7138e, e59796fc80603bcd8569d4d2e10b213c1918edb4, 21a4e47578d44c6b37c4fc4aba8ed7cc8dbb13de |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
May 1, 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 use-after-free in __smb2_lease_break_noti() Move tcp_transport free to ksmbd_conn_free. If ksmbd connection is referenced when ksmbd server thread terminates, It will not be freed, but conn->tcp_transport is freed. __smb2_lease_break_noti can be performed asynchronously when the connection is disconnected. __smb2_lease_break_noti calls ksmbd_conn_write, which can cause use-after-free when conn->ksmbd_transport is already freed.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-37777 records a Unknown severity vulnerability in ksmbd: fix use-after-free in __smb2_lease_break_noti(). 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 <1da8bd9a10ecd718692732294d15fd801c0eabb5 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <1aec4d14cf81b7b3e7b69eb1cfa94144eed7138e || >=0626e6641f6b467447c81dd7678a69c66f7746cf <e59796fc80603bcd8569d4d2e10b213c1918edb4 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <21a4e47578d44c6b37c4fc4aba8ed7cc8dbb13de | 1da8bd9a10ecd718692732294d15fd801c0eabb5, 1aec4d14cf81b7b3e7b69eb1cfa94144eed7138e, e59796fc80603bcd8569d4d2e10b213c1918edb4, 21a4e47578d44c6b37c4fc4aba8ed7cc8dbb13de |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
May 1, 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 use-after-free in __smb2_lease_break_noti() Move tcp_transport free to ksmbd_conn_free. If ksmbd connection is referenced when ksmbd server thread terminates, It will not be freed, but conn->tcp_transport is freed. __smb2_lease_break_noti can be performed asynchronously when the connection is disconnected. __smb2_lease_break_noti calls ksmbd_conn_write, which can cause use-after-free when conn->ksmbd_transport is already freed.
Quoted source text, attributed separately from HOL analysis.