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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

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

No history.

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

Use After Free

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