CVE-2026-45972

CRITICAL

smb: client: fix potential UAF and double free in smb2_open_file()

Title source: cna
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF and double free in smb2_open_file() Zero out @err_iov and @err_buftype before retrying SMB2_open() to prevent an UAF bug if @data != NULL, otherwise a double free.

References (6)

Core 6

Scores

CVSS v3 9.8
EPSS 0.0050
EPSS Percentile 38.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (20)
Linux/Linux < 6.19
Linux/Linux 3a6d6b332f92990958602c1e35ce0173e2dd62e9 - 7425453ea16dbc3bbb0f6cac4d60b537e5e4d151
Linux/Linux 6.1.163 - 6.1.165
Linux/Linux 6.1.165 - 6.1.*
Linux/Linux 6.12.70 - 6.12.75
Linux/Linux 6.12.75 - 6.12.*
Linux/Linux 6.18.10 - 6.18.14
Linux/Linux 6.18.14 - 6.18.*
Linux/Linux 6.19
Linux/Linux 6.19.4 - 6.19.*
... and 10 more
Published May 27, 2026
Tracked Since May 27, 2026