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CVE-2026-45972

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

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Severity

Important

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · May 27, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel's Server Message Block (SMB) client. This vulnerability, within the smb2_open_file() function, could allow an attacker to cause memory corruption due to improper handling of memory during file open operations. This could lead to system instability or potentially enable an attacker to execute arbitrary code.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-825 · Expired Pointer Dereference