CriticalFix available
smb: client: fix query directory replay double-free
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 6.12.96, 6.18.39, 6.6.145, 7.1.4
- CVEs
- CVE-2026-64387
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 06:17 UTC · Revision 1
Source evidence
smb: client: fix query directory replay double-free
core-osv · Original sourcePublished 25 Jul 2026, 08:50 UTC
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.
osv:CVE-2026-64387
Kernel
Fixed versions: 6.6.145, 6.12.96, 6.18.39, 7.1.4
Complete source record
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"modified": "2026-10-28T02:30:26.261372695Z",
"provider": "osv",
"references": [
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"source_id": "core-osv",
"document_id": 493013,
"published_at": "2026-07-25T08:50:35.543+00:00"
}