CVE-2026-64597

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_close() replay A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_close_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 v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/037511726228aaf165c7067ff2bfc88eaecdf1f3
https://git.kernel.org/stable/c/0aa97edf7c347c0f54e7e60c4740574b8120c66a
https://git.kernel.org/stable/c/b18ed621dbfceecea5539848cddcb9272c9a61e1
https://git.kernel.org/stable/c/d15d83125007f673aec4323e1bbbaaffbe87ea13
https://git.kernel.org/stable/c/f96e1cdcb63ed3321142ff2fcdf784e32cda8fee

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-06 08:16

Updated : 2026-08-17 05:18

NVD link : CVE-2026-64597

Mitre link : CVE-2026-64597

CVE.ORG link : CVE-2026-64597

JSON object : View

Products Affected

No product.

CWE

No CWE.

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