// For flags

CVE-2022-47938

Linux Kernel ksmbd Out-Of-Bounds Read Denial-of-Service Vulnerability

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2misc.c has an out-of-bounds read and OOPS for SMB2_TREE_CONNECT.

Se descubrió un problema en ksmbd en el kernel de Linux 5.15 a 5.19 anterior a 5.19.2. fs/ksmbd/smb2misc.c tiene una lectura fuera de los límites y OOPS para SMB2_TREE_CONNECT.

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Linux Kernel. Authentication is required to exploit this vulnerability.
The specific flaw exists within the handling of SMB2_TREE_CONNECT commands. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

*Credits: Arnaud Gatignol, Quentin Minster, Florent Saudel, Guillaume Teissier (@thalium_team)
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-12-22 CVE Published
  • 2022-12-23 CVE Reserved
  • 2024-08-03 CVE Updated
  • 2024-08-13 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-125: Out-of-bounds Read
CAPEC
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"
>= 5.15 < 5.19.2
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 5.19.2"
-
Affected