CVE-2026-45972

Critical

Open

TLP:CLEAR

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

NVD CVE.org

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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.

Details

CVSS Score: 9.8
EPSS Score ⓘ: 0.33%

26.3th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence: 90%
Published: May 27, 2026
Last Modified: Aug 5, 2026

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