CVE-2022-3239

kernel: media: em28xx: initialize refcount before kref_get

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw use after free in the Linux kernel video4linux driver was found in the way user triggers em28xx_usb_probe() for the Empia 28xx based TV cards. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.

Se ha encontrado un fallo de uso de memoria previamente liberada en el controlador video4linux del kernel de Linux en la forma en que el usuario desencadena em28xx_usb_probe() para las tarjetas de TV basadas en Empia 28xx. Un usuario local podría usar este fallo para bloquear el sistema o potencialmente escalar sus privilegios en el sistema

A use-after-free flaw was found in the Linux kernel’s video4linux driver in how a user triggers the em28xx_usb_probe() for the Empia 28xx-based TV cards. This flaw allows a local user to crash or potentially escalate their privileges on the system.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-09-19 CVE Reserved
2022-09-19 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (4)

URL	Tag	Source
https://security.netapp.com/advisory/ntap-20230214-0006

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c08eadca1bdfa099e20a32f8fa4b52b2f672236d	2023-02-14

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2022-3239	2024-02-21
https://bugzilla.redhat.com/show_bug.cgi?id=2127985	2024-02-21

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"				>= 3.15 < 4.14.295 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.15 < 4.14.295"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.15 < 4.19.238 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 4.19.238"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.20 < 5.4.189 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.4.189"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.5 < 5.10.110 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.10.110"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.11 < 5.15.33 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.15.33"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.16 < 5.16.19 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.16 < 5.16.19"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.17 < 5.17.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 5.17.2"		-		Affected