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CVE-2026-31608

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CVE-2026-31608

Published: Apr 24, 2026

Modified: May 23, 2026

PUBLISHED

CVSS v3.1

9.8

CRITICAL

Description

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

VendorProductVersions

Linux

Linux

affected
5ef18a2e66f2f33fdac64437bddfb9fe6389fdc7 - < 6968c91fab05b8fc4d6700e0cf34472bb422df25
affected
79242e7b6bc63efec28b7c235bc320806afce6c0 - < 2ba03f46132b0d1a7bafb86e1ef61951a2254023
affected
34abd408c8ba24d7c97bd02ba874d8c714f49db1 - < 830de6eeb9db4cb7e758201fb99328ef4ca4b032
affected
34abd408c8ba24d7c97bd02ba874d8c714f49db1 - < 84ff995ae826aa6bbcc6c7b9ea569ff67c021d72
affected
6.18.11 - < 6.18.24

+1 more versions

Linux

Linux

affected
7.0
unaffected
0 - < 7.0
unaffected
6.18.24 - <= 6.18.*
unaffected
6.19.14 - <= 6.19.*
unaffected
7.0.1 - <= 7.0.*

+1 more versions

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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