Linux Kernel up to 6.3.3 ext2 privilege escalation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.3.3. This impacts an unknown function of the component ext2. Performing a manipulation results in an unknown weakness. This vulnerability is known as CVE-2023-53569. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.3.3. This affects some unknown functionality of the component ext2. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ext2: Check block size validity during mount Check that log of block size stored in the superblock has sensible value. Otherwise the shift computing the block size can overflow leading to undefined behavior.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2023-53569 since 10/04/2025. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/02/2026).

Upgrading to version 4.14.316, 4.19.284, 5.4.244, 5.10.181, 5.15.113, 6.1.30 or 6.3.4 eliminates this vulnerability. Applying the patch 0ebfaf14150f55550cffb1148ed3920143c7a69c/451b98155be5dfee05bc6e7c8b30c0be4add3f71/c4813f858e5c3e4c4659ce95385c1c400c593e1e/22ab5fed07ad4b206ea910fd0132d1a0d4831584/99f8a15af6c9f0653193104a9e70891f950c6001/e6f4fb28890c1361e0db9eb1adee3fc04e7fe7f5/c2e7776843a953fd7e48895c3880c277f996193e/62aeb94433fcec80241754b70d0d1836d5926b0a 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 EUVD (EUVD-2023-60039) and CERT Bund (WID-SEC-2025-2194). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Google Cloud Platform
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • NetApp ActiveIQ Unified Manager
  • IBM QRadar SIEM
  • Dell NetWorker

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.14.316/4.19.284/5.4.244/5.10.181/5.15.113/6.1.30/6.3.4
Patch: 0ebfaf14150f55550cffb1148ed3920143c7a69c/451b98155be5dfee05bc6e7c8b30c0be4add3f71/c4813f858e5c3e4c4659ce95385c1c400c593e1e/22ab5fed07ad4b206ea910fd0132d1a0d4831584/99f8a15af6c9f0653193104a9e70891f950c6001/e6f4fb28890c1361e0db9eb1adee3fc04e7fe7f5/c2e7776843a953fd7e48895c3880c277f996193e/62aeb94433fcec80241754b70d0d1836d5926b0a

Timelineinfo

10/04/2025 Advisory disclosed
10/04/2025 +0 days CVE reserved
10/04/2025 +0 days VulDB entry created
03/02/2026 +149 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53569 (🔒)
GCVE (CVE): GCVE-0-2023-53569
GCVE (VulDB): GCVE-100-327105
EUVD: 🔒
CERT Bund: WID-SEC-2025-2194 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 10/04/2025 18:06
Updated: 03/02/2026 07:28
Changes: 10/04/2025 18:06 (57), 10/05/2025 03:59 (1), 11/23/2025 20:19 (7), 12/26/2025 13:38 (1), 02/12/2026 19:30 (11), 03/02/2026 07:28 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!