CVE-2026-31609

In the Linux kernel, the following vulnerability has been resolved: smb: client: avoid double-free in smbd_free_send_io() after smbd_send_batch_flush() smbd_send_batch_flush() already calls smbd_free_send_io(), so we should not call it again after smbd_post_send() moved it to the batch list.

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/22b7c1c619d808aec4cad3dc42103345e370d107	Patch
https://git.kernel.org/stable/c/27b7c3e916218b5eb2ee350211140e961bfc49be	Patch
https://git.kernel.org/stable/c/a9940dcbe5cb92482c04efc7341039ddf7dbf607	Patch
https://git.kernel.org/stable/c/f9a162c2bbcd0ac85bd07c5b37cf20286048b65c	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::::::::

History

No history.

Information

Published : 2026-04-24 15:16

Updated : 2026-06-17 10:34

NVD link : CVE-2026-31609

Mitre link : CVE-2026-31609

CVE.ORG link : CVE-2026-31609

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-415

Double Free

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