CVE-2021-47096

ALSA: rawmidi - fix the uninitalized user_pversion

Severity Score

4.0

*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: ALSA: rawmidi - fix the uninitalized user_pversion The user_pversion was uninitialized for the user space file structure
in the open function, because the file private structure use
kmalloc for the allocation. The kernel ALSA sequencer code clears the file structure, so no additional
fixes are required. BugLink: https://github.com/alsa-project/alsa-lib/issues/178

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ALSA: rawmidi: corrige la user_pversion no inicializada. La user_pversion no se inicializó para la estructura de archivos del espacio de usuario en la función abierta, porque la estructura privada del archivo usa kmalloc para la asignación. El código del secuenciador ALSA del kernel borra la estructura del archivo, por lo que no se requieren correcciones adicionales. Enlace de error: https://github.com/alsa-project/alsa-lib/issues/178

In the Linux kernel, the following vulnerability has been resolved: ALSA: rawmidi - fix the uninitalized user_pversion The user_pversion was uninitialized for the user space file structure in the open function, because the file private structure use kmalloc for the allocation. The kernel ALSA sequencer code clears the file structure, so no additional fixes are required. BugLink: https://github.com/alsa-project/alsa-lib/issues/178

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-02-29 CVE Reserved
2024-03-04 CVE Published
2024-03-05 EPSS Updated
2024-12-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (4)

URL	Tag	Source
https://git.kernel.org/stable/c/09d23174402da0f10e98da2c61bb5ac8e7d79fdd	Vuln. Introduced
https://git.kernel.org/stable/c/12d50801497235956fb3760be8530f4e44e4ce67	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/b398fcbe4de1e1100867fdb6f447c6fbc8fe7085	2021-12-29
https://git.kernel.org/stable/c/39a8fc4971a00d22536aeb7d446ee4a97810611b	2021-12-22

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"				>= 5.15 < 5.15.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 5.15.12"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.15 < 5.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 5.16"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				5.14.10 Search vendor "Linux" for product "Linux Kernel" and version "5.14.10"		en		Affected