CVE-2025-37777

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Source
https://cve.org/CVERecord?id=CVE-2025-37777
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-37777.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-37777
Downstream
Published
2025-05-01T13:07:15.741Z
Modified
2026-03-09T23:55:41.621337Z
Summary
ksmbd: fix use-after-free in __smb2_lease_break_noti()
Details

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix use-after-free in _smb2leasebreaknoti()

Move tcptransport free to ksmbdconnfree. If ksmbd connection is referenced when ksmbd server thread terminates, It will not be freed, but conn->tcptransport is freed. __smb2leasebreak_noti can be performed asynchronously when the connection is disconnected. __smb2leasebreaknoti calls ksmbdconnwrite, which can cause use-after-free when conn->ksmbdtransport is already freed.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37777.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
1da8bd9a10ecd718692732294d15fd801c0eabb5
Fixed
1aec4d14cf81b7b3e7b69eb1cfa94144eed7138e
Fixed
e59796fc80603bcd8569d4d2e10b213c1918edb4
Fixed
21a4e47578d44c6b37c4fc4aba8ed7cc8dbb13de

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-37777.json"