SB20240530173 - Use-after-free in Linux kernel smb client

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Main Vulnerability Database SB20240530173

SB20240530173 - Use-after-free in Linux kernel smb client

Published: May 30, 2024 Updated: May 14, 2025

Security Bulletin ID SB20240530173
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use-after-free (CVE-ID: CVE-2023-52757)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the alloc_mid() function in fs/smb/client/transport.c, within the __smb2_handle_cancelled_cmd() function in fs/smb/client/smb2misc.c, within the cifs_compose_mount_options(), __release_mid() and cifs_get_tcon_super() functions in fs/smb/client/cifsproto.h. A local user can escalate privileges on the system.


Remediation

Install update from vendor's website.

References