CVE-2026-64385

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_ioctl() replay A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_ioctl_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/0be4bc64882edaefaaee8d1e27d083643eb778e6	Patch
https://git.kernel.org/stable/c/276c8efbc49f9303ac76d0d4deab7128581b0f3b	Patch
https://git.kernel.org/stable/c/96fcfc8ae7359346156e492ca610e830d2649ad6	Patch
https://git.kernel.org/stable/c/f9bbadb6c94583e3b4af1afc449bfceb1d1ddec9	Patch
https://git.kernel.org/stable/c/fc65ffb4ef1bf540da16b17c225ae51091e07d72	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.8:-::::::
	cpe:2.3:o:linux:linux_kernel:6.8:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.8:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.8:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.8:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.8:rc6::::::
	cpe:2.3:o:linux:linux_kernel:6.8:rc7::::::

History

No history.

Information

Published : 2026-07-25 10:17

Updated : 2026-09-04 20:45

NVD link : CVE-2026-64385

Mitre link : CVE-2026-64385

CVE.ORG link : CVE-2026-64385

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-415

Double Free

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