CVE-2023-53569

ext2: Check block size validity during mount

Severity Score

7.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

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.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2025-10-04 CVE Reserved
2025-10-04 CVE Published
2025-10-06 CVE Updated
2025-10-10 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (8)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/0ebfaf14150f55550cffb1148ed3920143c7a69c	2023-05-30
https://git.kernel.org/stable/c/451b98155be5dfee05bc6e7c8b30c0be4add3f71	2023-05-30
https://git.kernel.org/stable/c/c4813f858e5c3e4c4659ce95385c1c400c593e1e	2023-05-30
https://git.kernel.org/stable/c/22ab5fed07ad4b206ea910fd0132d1a0d4831584	2023-05-30
https://git.kernel.org/stable/c/99f8a15af6c9f0653193104a9e70891f950c6001	2023-05-24
https://git.kernel.org/stable/c/e6f4fb28890c1361e0db9eb1adee3fc04e7fe7f5	2023-05-24
https://git.kernel.org/stable/c/c2e7776843a953fd7e48895c3880c277f996193e	2023-05-24
https://git.kernel.org/stable/c/62aeb94433fcec80241754b70d0d1836d5926b0a	2023-03-06

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.14.316 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.316"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.284 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.284"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.244 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.244"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.181 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.181"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.113 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.113"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.1.30 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.30"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.3.4 Search vendor "Linux" for product "Linux Kernel" and version " < 6.3.4"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.4 Search vendor "Linux" for product "Linux Kernel" and version " < 6.4"		en		Affected