CVE-2024-26952

ksmbd: fix potencial out-of-bounds when buffer offset is invalid

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix potencial out-of-bounds when buffer offset is invalid

I found potencial out-of-bounds when buffer offset fields of a few requests
is invalid. This patch set the minimum value of buffer offset field to
->Buffer offset to validate buffer length.

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ksmbd: corrige posibles límites cuando el desplazamiento del búfer no es válido. Encontré posibles límites cuando los campos de desplazamiento del búfer de algunas solicitudes no son válidos. Este parche establece el valor mínimo del campo de compensación del búfer en ->Desplazamiento del búfer para validar la longitud del búfer.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2024-02-19 CVE Reserved
2024-05-01 CVE Published
2024-05-24 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-125: Out-of-bounds Read

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/39bdc4197acf2ed13269167ccf093ee28cfa2a4e	2024-05-25
https://git.kernel.org/stable/c/2dcda336b6e80b72d58d30d40f2fad9724e5fe63	2024-04-03
https://git.kernel.org/stable/c/0c5541b4c980626fa3cab16ba1a451757778bbb5	2024-04-03
https://git.kernel.org/stable/c/c6cd2e8d2d9aa7ee35b1fa6a668e32a22a9753da	2024-03-19

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"				< 6.6.32 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.32"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.7.12 Search vendor "Linux" for product "Linux Kernel" and version " < 6.7.12"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.8.3 Search vendor "Linux" for product "Linux Kernel" and version " < 6.8.3"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.9 Search vendor "Linux" for product "Linux Kernel" and version " < 6.9"		en		Affected