CVE-2026-64387
smb: client: fix query directory replay double-free
Using Linux by Linux?
Get instant alerts when new vulnerabilities affect Linux - before attackers find them.
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/3409aedf3c81a810243da94164f6621c9d205c98
- https://git.kernel.org/stable/c/1665f25b1dea30bf2d02e16245d203a944c9d994
- https://git.kernel.org/stable/c/00b0fa425941438b664950a8ee65dfba2def4336
- https://git.kernel.org/stable/c/3317a5d015fca976475aa71df224056777316fde
- https://git.kernel.org/stable/c/9647492b5e41954be59d5157eddbcd4cdc1656f7
References (5)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
Quick Info
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.