CVE-2023-52837

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-52837
In the Linux kernel, the following vulnerability has been resolved: nbd: fix uaf in nbd_open Commit 4af5f2e03013 ("nbd: use blk_mq_alloc_disk and blk_cleanup_disk") cleans up disk by blk_cleanup_disk() and it won't set disk->private_data as NULL as before. UAF may be triggered in nbd_open() if someone tries to open nbd device right after nbd_put() since nbd has been free in nbd_dev_remove(). Fix this by implementing ->free_disk and free private data in it.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/327462725b0f759f093788dfbcb2f1fd132f956b Patch
https://git.kernel.org/stable/c/4e9b3ec84dc97909876641dad14e0a2300d6c2a3 Patch
https://git.kernel.org/stable/c/56bd7901b5e9dbc9112036ea615ebcba1565fafe Patch
https://git.kernel.org/stable/c/879947f4180bc6e83af64eb0515e0cf57fce15db Patch
https://git.kernel.org/stable/c/327462725b0f759f093788dfbcb2f1fd132f956b Patch
https://git.kernel.org/stable/c/4e9b3ec84dc97909876641dad14e0a2300d6c2a3 Patch
https://git.kernel.org/stable/c/56bd7901b5e9dbc9112036ea615ebcba1565fafe Patch
https://git.kernel.org/stable/c/879947f4180bc6e83af64eb0515e0cf57fce15db Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

15 Jan 2025, 18:14

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/327462725b0f759f093788dfbcb2f1fd132f956b - () https://git.kernel.org/stable/c/327462725b0f759f093788dfbcb2f1fd132f956b - Patch
References () https://git.kernel.org/stable/c/4e9b3ec84dc97909876641dad14e0a2300d6c2a3 - () https://git.kernel.org/stable/c/4e9b3ec84dc97909876641dad14e0a2300d6c2a3 - Patch
References () https://git.kernel.org/stable/c/56bd7901b5e9dbc9112036ea615ebcba1565fafe - () https://git.kernel.org/stable/c/56bd7901b5e9dbc9112036ea615ebcba1565fafe - Patch
References () https://git.kernel.org/stable/c/879947f4180bc6e83af64eb0515e0cf57fce15db - () https://git.kernel.org/stable/c/879947f4180bc6e83af64eb0515e0cf57fce15db - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
CWE CWE-416
First Time Linux linux Kernel
Linux

21 Nov 2024, 08:40

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: nbd: corrija uaf en nbd_open Commit 4af5f2e03013 ("nbd: use blk_mq_alloc_disk y blk_cleanup_disk") limpia el disco mediante blk_cleanup_disk() y no configurará disk->private_data como NULL como antes. UAF puede activarse en nbd_open() si alguien intenta abrir el dispositivo nbd justo después de nbd_put() ya que nbd ha estado libre en nbd_dev_remove(). Solucione este problema implementando ->free_disk y datos privados gratuitos en él.
References () https://git.kernel.org/stable/c/327462725b0f759f093788dfbcb2f1fd132f956b - () https://git.kernel.org/stable/c/327462725b0f759f093788dfbcb2f1fd132f956b -
References () https://git.kernel.org/stable/c/4e9b3ec84dc97909876641dad14e0a2300d6c2a3 - () https://git.kernel.org/stable/c/4e9b3ec84dc97909876641dad14e0a2300d6c2a3 -
References () https://git.kernel.org/stable/c/56bd7901b5e9dbc9112036ea615ebcba1565fafe - () https://git.kernel.org/stable/c/56bd7901b5e9dbc9112036ea615ebcba1565fafe -
References () https://git.kernel.org/stable/c/879947f4180bc6e83af64eb0515e0cf57fce15db - () https://git.kernel.org/stable/c/879947f4180bc6e83af64eb0515e0cf57fce15db -

21 May 2024, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-21 16:15

Updated : 2025-01-15 18:14

NVD link : CVE-2023-52837

Mitre link : CVE-2023-52837

CVE.ORG link : CVE-2023-52837

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

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