CVE-2023-54280
Unknown Unknown - Not Provided

Use-After-Free Vulnerability in Linux CIFS IPC Tree Connection

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential race when tree connecting ipc Protect access of TCP_Server_Info::hostname when building the ipc tree name as it might get freed in cifsd thread and thus causing an use-after-free bug in __tree_connect_dfs_target(). Also, while at it, update status of IPC tcon on success and then avoid any extra tree connects.

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Meta Information

Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-07-06
AI Q&A
2025-12-30
EPSS Evaluated
2026-07-05
NVD
CVE-2023-54280

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a use-after-free bug in the Linux kernel's CIFS (Common Internet File System) implementation. It occurs due to a race condition when connecting the IPC tree, where the hostname in TCP_Server_Info might be freed by the cifsd thread while still being accessed, leading to potential memory corruption or crashes.

Impact Analysis

The vulnerability can cause memory corruption or crashes in the Linux kernel's CIFS subsystem, potentially leading to denial of service or other unpredictable behavior on systems using CIFS for network file sharing.

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