Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query directory replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_directory_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/00b0fa425941438b664950a8ee65dfba2def4336
- https://git.kernel.org/stable/c/1665f25b1dea30bf2d02e16245d203a944c9d994
- https://git.kernel.org/stable/c/3317a5d015fca976475aa71df224056777316fde
- https://git.kernel.org/stable/c/3409aedf3c81a810243da94164f6621c9d205c98
- https://git.kernel.org/stable/c/9647492b5e41954be59d5157eddbcd4cdc1656f7
FAQ
What is CVE-2026-64387?
CVE-2026-64387 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 directory replay double-free A response-bearing attempt can return a replayable error and free its response...
How severe is CVE-2026-64387?
CVE-2026-64387 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-2026-64387?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.