CVE-2023-52757

CVE Details

Release Date:

2024-05-21

Description

In the Linux kernel, the following vulnerability has been resolved:\nsmb: client: fix potential deadlock when releasing mids\nAll release_mid() callers seem to hold a reference of @mid so there is\nno need to call kref_put(&mid->refcount, __release_mid) under\n@server->mid_lock spinlock. If they don't, then an use-after-free bug\nwould have occurred anyways.\nBy getting rid of such spinlock also fixes a potential deadlock as\nshown below\nCPU 0 CPU 1\n------------------------------------------------------------------\ncifs_demultiplex_thread() cifs_debug_data_proc_show()\nrelease_mid()\nspin_lock(&server->mid_lock);\nspin_lock(&cifs_tcp_ses_lock)\nspin_lock(&server->mid_lock)\n__release_mid()\nsmb2_find_smb_tcon()\nspin_lock(&cifs_tcp_ses_lock) *deadlock*

See more information about CVE-2023-52757 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	5.5	CVSS Vector:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector:	Local network	Attack Complexity:	Low
Privileges Required:	Low	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 9 (kernel)	ELSA-2024-9315	2024-11-14