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VULNERABILITIES

CVE-2023-52837 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA: kernel.orgCVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://git.kernel.org/stable/c/327462725b0f759f093788dfbcb2f1fd132f956b kernel.orgPatch
https://git.kernel.org/stable/c/4e9b3ec84dc97909876641dad14e0a2300d6c2a3 kernel.orgPatch
https://git.kernel.org/stable/c/56bd7901b5e9dbc9112036ea615ebcba1565fafe kernel.orgPatch
https://git.kernel.org/stable/c/879947f4180bc6e83af64eb0515e0cf57fce15db kernel.orgPatch
https://git.kernel.org/stable/c/327462725b0f759f093788dfbcb2f1fd132f956b CVEPatch

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-416Use After Free[email protected]

Affected Products

ProductVersions
linux linux kernel
>= 5.14, < 6.1.63
>= 6.2, < 6.5.12
>= 6.6, < 6.6.2

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2023-52837
NVD Published Date:
May 21, 2024
NVD Last Modified:
Aug 4, 2026
Source:
kernel.org
CVE-2023-52837 Details - Not Deferred