PT-2025-54087 · Linux+1 · Linux Kernel+1

CVE-2023-54258

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Published

2023-08-10

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Updated

2026-07-02

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description The Linux kernel contains a flaw within the CIFS implementation, specifically in the cifs oplock break function. A race condition can occur with deferred close operations and lease breaks, potentially leading to an 'oops' condition during unmounting. This issue arises from the order of checks performed before sending an oplock response. The vulnerability can be triggered when the openFileList is empty.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

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Weakness Enumeration

Related Identifiers

BDU:2026-13787
CVE-2023-54258
SUSE-SU-2026:0278-1
SUSE-SU-2026:0281-1
SUSE-SU-2026:0293-1
SUSE-SU-2026:0315-1
SUSE-SU-2026:20477-1
SUSE-SU-2026:20498-1
SUSE-SU-2026:20845-1
SUSE-SU-2026:20876-1

Affected Products

Linux Kernel
Red Os