Linux Kernel up to 5.12.8 fujitsu fmvj18x_get_hwinfo 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, which was classified as critical, has been found in Linux Kernel up to 5.12.8. This affects the function fmvj18x_get_hwinfo of the component fujitsu. Performing a manipulation results in null pointer dereference. This vulnerability was named CVE-2021-47149. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.12.8. This affects the function fmvj18x_get_hwinfo of the component fujitsu. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: net: fujitsu: fix potential null-ptr-deref In fmvj18x_get_hwinfo(), if ioremap fails there will be NULL pointer deref. To fix this, check the return value of ioremap and return -1 to the caller in case of failure.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2021-47149 since 03/04/2024. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 266444 (Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-7797-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.4.271, 4.9.271, 4.14.235, 4.19.193, 5.4.124, 5.10.42, 5.12.9 or 5.13 eliminates this vulnerability. Applying the patch b92170e209f7/6dbf1101594f/c4f1c23edbe9/7883d3895d0f/22049c3d40f0/71723a796ab7/f14bf57a0877/52202be1cd99 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 databases at Tenable (266444) and CERT Bund (WID-SEC-2024-0699). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • EMC Avamar
  • Dell NetWorker
  • Open Source Linux Kernel
  • IBM Spectrum Protect Plus

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

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

CVSSv2info

AVACAuCIA
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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: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 266444
Nessus Name: Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-7797-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.4.271/4.9.271/4.14.235/4.19.193/5.4.124/5.10.42/5.12.9/5.13
Patch: b92170e209f7/6dbf1101594f/c4f1c23edbe9/7883d3895d0f/22049c3d40f0/71723a796ab7/f14bf57a0877/52202be1cd99

Timelineinfo

03/04/2024 🔍
03/25/2024 +21 days 🔍
03/25/2024 +0 days 🔍
10/04/2025 +558 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2021-47149 (🔍)
GCVE (CVE): GCVE-0-2021-47149
GCVE (VulDB): GCVE-100-257853
CERT Bund: WID-SEC-2024-0699 - Linux-Kernel: Mehrere Schwachstellen ermöglichen Denial of Service und unspezifische Angriffe

Entryinfo

Created: 03/25/2024 11:07
Updated: 10/04/2025 04:26
Changes: 03/25/2024 11:07 (58), 08/04/2025 06:48 (8), 10/04/2025 04:26 (2)
Complete: 🔍
Cache ID: 216::103

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