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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00209.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
433042a91f9373241307725b52de573933ffedbf affected < 3409aedf3c81a810243da94164f6621c9d205c98
4f1fffa2376922f3d1d506e49c0fd445b023a28e affected < 1665f25b1dea30bf2d02e16245d203a944c9d994
4f1fffa2376922f3d1d506e49c0fd445b023a28e affected < 00b0fa425941438b664950a8ee65dfba2def4336
4f1fffa2376922f3d1d506e49c0fd445b023a28e affected < 3317a5d015fca976475aa71df224056777316fde
4f1fffa2376922f3d1d506e49c0fd445b023a28e affected < 9647492b5e41954be59d5157eddbcd4cdc1656f7
6.6.32 affected < 6.6.145
Linux Linux affected
Version Status Constraints
6.8 affected —
0 unaffected < 6.8
6.6.145 unaffected ≤ 6.6.*
6.12.96 unaffected ≤ 6.12.*
6.18.39 unaffected ≤ 6.18.*
7.1.4 unaffected ≤ 7.1.*
7.2-rc1 unaffected ≤ *

No data.

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/00b0fa425941438b664950a8ee65dfba2def4336 cve-icon
https://git.kernel.org/stable/c/1665f25b1dea30bf2d02e16245d203a944c9d994 cve-icon
https://git.kernel.org/stable/c/3317a5d015fca976475aa71df224056777316fde cve-icon
https://git.kernel.org/stable/c/3409aedf3c81a810243da94164f6621c9d205c98 cve-icon
https://git.kernel.org/stable/c/9647492b5e41954be59d5157eddbcd4cdc1656f7 cve-icon
History

Sat, 25 Jul 2026 09:30:00 +0000

Type Values Removed Values Added
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.
Title smb: client: fix query directory replay double-free
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-25T08:50:35.543Z

Reserved: 2026-07-19T15:36:31.784Z

Link: CVE-2026-64387

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-25T19:30:03Z

Weaknesses

No weakness.