Linux Kernel up to 5.10.194/5.15.131/6.1.52/6.4.15/6.5.2 ext4 ext4_mb_good_group denial of service

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 5.10.194/5.15.131/6.1.52/6.4.15/6.5.2. Affected by this vulnerability is the function ext4_mb_good_group of the component ext4. Performing a manipulation results in denial of service. This vulnerability is cataloged as CVE-2023-53861. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.10.194/5.15.131/6.1.52/6.4.15/6.5.2. It has been classified as critical. This affects the function ext4_mb_good_group of the component ext4. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ext4: correct grp validation in ext4_mb_good_group Group corruption check will access memory of grp and will trigger kernel crash if grp is NULL. So do NULL check before corruption check.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2023-53861 since 12/09/2025. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 278016 (Linux Distros Unpatched Vulnerability : CVE-2023-53861), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.195, 5.15.132, 6.1.53, 6.4.16 or 6.5.3 eliminates this vulnerability. Applying the patch 245759d987b617d183061db6ab8886ebb5cc78e9/3e24082f16825279054a2b8a5e668d65070bbf07/772ca4bc1d0d21320ef2ecc0f9e4f90ea85a035d/83a9d5f5ec7e75640b1ba0bbd77a4888df798bb4/e69d665987db0e37896adf78a7e718f9a0a75d3f/a9ce5993a0f5c0887c8a1b4ffa3b8046fbcfdc93 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 (278016) and CERT Bund (WID-SEC-2025-2765). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux

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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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: 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: 278016
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53861

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.195/5.15.132/6.1.53/6.4.16/6.5.3
Patch: 245759d987b617d183061db6ab8886ebb5cc78e9/3e24082f16825279054a2b8a5e668d65070bbf07/772ca4bc1d0d21320ef2ecc0f9e4f90ea85a035d/83a9d5f5ec7e75640b1ba0bbd77a4888df798bb4/e69d665987db0e37896adf78a7e718f9a0a75d3f/a9ce5993a0f5c0887c8a1b4ffa3b8046fbcfdc93

Timelineinfo

12/09/2025 Advisory disclosed
12/09/2025 +0 days CVE reserved
12/09/2025 +0 days VulDB entry created
03/30/2026 +111 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53861 (🔒)
GCVE (CVE): GCVE-0-2023-53861
GCVE (VulDB): GCVE-100-335049
CERT Bund: WID-SEC-2025-2765 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 12/09/2025 11:14
Updated: 03/30/2026 04:58
Changes: 12/09/2025 11:14 (59), 12/10/2025 14:12 (2), 03/30/2026 04:58 (7)
Complete: 🔍
Cache ID: 216:0AF:103

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