CVE-2023-54076

critical

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix missed ses refcounting Use new cifs_smb_ses_inc_refcount() helper to get an active reference of @ses and @ses->dfs_root_ses (if set). This will prevent @ses->dfs_root_ses of being put in the next call to cifs_put_smb_ses() and thus potentially causing an use-after-free bug.

References

https://git.kernel.org/stable/c/eb382196e6f6e05cfafdab797840e5a96c6e7bf0

https://git.kernel.org/stable/c/bf99f6be2d20146942bce6f9e90a0ceef12cbc1e

Details

Source: Mitre, NVD

Published: 2025-12-24

Updated: 2026-08-04

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.00018