Linux Kernel up to 6.7.1 gfs2 gfs2_rgrp_dump null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.7.1. It has been declared as problematic. This vulnerability affects the function gfs2_rgrp_dump of the component gfs2. Executing a manipulation can lead to null pointer dereference. The identification of this vulnerability is CVE-2023-52448. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.7.1 (Operating System). It has been declared as problematic. This vulnerability affects the function gfs2_rgrp_dump of the component gfs2. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump Syzkaller has reported a NULL pointer dereference when accessing rgd->rd_rgl in gfs2_rgrp_dump(). This can happen when creating rgd->rd_gl fails in read_rindex_entry(). Add a NULL pointer check in gfs2_rgrp_dump() to prevent that.

The weakness was shared 02/22/2024. The advisory is available at git.kernel.org. This vulnerability was named CVE-2023-52448 since 02/20/2024. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 237278 (Alibaba Cloud Linux 3 : 0075: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2025:0075)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.20, 5.4.268, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2 or 6.8-rc1 eliminates this vulnerability. Applying the patch 5c28478af371/067a7c48c2c7/8877243beafa/c323efd620c7/d69d7804cf9e/ee0586d73cba/efc8ef87ab91 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (237278). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 237278
Nessus Name: Alibaba Cloud Linux 3 : 0075: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2025:0075)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.20/5.4.268/5.10.209/5.15.148/6.1.75/6.6.14/6.7.2/6.8-rc1
Patch: 5c28478af371/067a7c48c2c7/8877243beafa/c323efd620c7/d69d7804cf9e/ee0586d73cba/efc8ef87ab91

Timelineinfo

02/20/2024 🔍
02/22/2024 +2 days 🔍
02/22/2024 +0 days 🔍
05/27/2025 +460 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-52448 (🔍)
GCVE (CVE): GCVE-0-2023-52448
GCVE (VulDB): GCVE-100-254554

Entryinfo

Created: 02/22/2024 17:52
Updated: 05/27/2025 13:36
Changes: 02/22/2024 17:52 (44), 06/26/2024 03:57 (25), 05/27/2025 13:36 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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