Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query_info() replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_info_init() fails before the next send, cleanup retains the previous buffer type and frees that response again. Reset response bookkeeping before each attempt to prevent the stale free.
CVSS Score
CRITICAL
References
- https://git.kernel.org/stable/c/100fb7c455fa86d248b8bd7bb9de757c192870b4
- https://git.kernel.org/stable/c/2a88561d66eb855813cf004a0abe648bbb17de5e
- https://git.kernel.org/stable/c/3c81dda84799f76b42aec598564316e2964440db
- https://git.kernel.org/stable/c/89234773e8348918111aa15f6922b58cf3843364
- https://git.kernel.org/stable/c/f1add4acb656f5a82806a1ab0e63fed3d8b1bfca
FAQ
What is CVE-2026-64386?
CVE-2026-64386 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query_info() replay double-free A response-bearing attempt can return a replayable error and free its response bu...
How severe is CVE-2026-64386?
CVE-2026-64386 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-64386?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.