Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 6.6.101 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1aec4d14cf81b7b3e7b69eb1cfa94144eed7138ePatch
- https://git.kernel.org/stable/c/1da8bd9a10ecd718692732294d15fd801c0eabb5Patch
- https://git.kernel.org/stable/c/21a4e47578d44c6b37c4fc4aba8ed7cc8dbb13dePatch
- https://git.kernel.org/stable/c/e59796fc80603bcd8569d4d2e10b213c1918edb4Patch
FAQ
What is CVE-2025-37777?
CVE-2025-37777 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 referenc...
How severe is CVE-2025-37777?
CVE-2025-37777 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-37777?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.